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56331001 = 1391812239
BaseRepresentation
bin1101011011100…
…0101011111001
310220222220121101
43112320223321
5103410043001
65331211401
71252543216
oct326705371
9126886541
1056331001
1129885351
1216a46b61
13b893c6c
1476a4b0d
154e2aa01
hex35b8af9

56331001 has 8 divisors (see below), whose sum is σ = 57075200. Its totient is φ = 55591920.

The previous prime is 56330993. The next prime is 56331019. The reversal of 56331001 is 10013365.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 56331001 - 23 = 56330993 is a prime.

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 56331001.

It is not an unprimeable number, because it can be changed into a prime (56331031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24040 + ... + 26278.

It is an arithmetic number, because the mean of its divisors is an integer number (7134400).

Almost surely, 256331001 is an apocalyptic number.

It is an amenable number.

56331001 is a deficient number, since it is larger than the sum of its proper divisors (744199).

56331001 is a wasteful number, since it uses less digits than its factorization.

56331001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2559.

The product of its (nonzero) digits is 270, while the sum is 19.

The square root of 56331001 is about 7505.3981240171. The cubic root of 56331001 is about 383.3385445206.

Adding to 56331001 its reverse (10013365), we get a palindrome (66344366).

The spelling of 56331001 in words is "fifty-six million, three hundred thirty-one thousand, one".

Divisors: 1 139 181 2239 25159 311221 405259 56331001