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53430973 = 254321011
BaseRepresentation
bin1100101111010…
…0101010111101
310201112120111221
43023310222331
5102134242343
65145113341
71216104301
oct313645275
9121476457
1053430973
1128184532
1215a88851
13b0b9c7b
14714bd01
154a565ed
hex32f4abd

53430973 has 4 divisors (see below), whose sum is σ = 53454528. Its totient is φ = 53407420.

The previous prime is 53430961. The next prime is 53430977. The reversal of 53430973 is 37903435.

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 a de Polignac number, because none of the positive numbers 2k-53430973 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53430977) 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, 7963 + ... + 13048.

It is an arithmetic number, because the mean of its divisors is an integer number (13363632).

Almost surely, 253430973 is an apocalyptic number.

It is an amenable number.

53430973 is a deficient number, since it is larger than the sum of its proper divisors (23555).

53430973 is a wasteful number, since it uses less digits than its factorization.

53430973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23554.

The product of its (nonzero) digits is 34020, while the sum is 34.

The square root of 53430973 is about 7309.6493075934. The cubic root of 53430973 is about 376.6439776276.

The spelling of 53430973 in words is "fifty-three million, four hundred thirty thousand, nine hundred seventy-three".

Divisors: 1 2543 21011 53430973