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54009001 = 192842579
BaseRepresentation
bin1100111000000…
…1110010101001
310202121221102101
43032001302221
5102311242001
65205333401
71224032434
oct316016251
9122557371
1054009001
1128539842
1216107261
13b2600b7
14725c81b
154b1ca01
hex3381ca9

54009001 has 4 divisors (see below), whose sum is σ = 56851600. Its totient is φ = 51166404.

The previous prime is 54008987. The next prime is 54009019. The reversal of 54009001 is 10090045.

54009001 = T5999 + T6000 + T6001.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 54009001 - 27 = 54008873 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19), and also a Moran number because the ratio is a prime number: 2842579 = 54009001 / (5 + 4 + 0 + 0 + 9 + 0 + 0 + 1).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 54009001.

It is not an unprimeable number, because it can be changed into a prime (54009031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1421271 + ... + 1421308.

It is an arithmetic number, because the mean of its divisors is an integer number (14212900).

Almost surely, 254009001 is an apocalyptic number.

54009001 is the 6001-st centered triangular number.

It is an amenable number.

54009001 is a deficient number, since it is larger than the sum of its proper divisors (2842599).

54009001 is a wasteful number, since it uses less digits than its factorization.

54009001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2842598.

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 54009001 is about 7349.0816433076. The cubic root of 54009001 is about 377.9973148191.

Adding to 54009001 its reverse (10090045), we get a palindrome (64099046).

The spelling of 54009001 in words is "fifty-four million, nine thousand, one".

Divisors: 1 19 2842579 54009001