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56807901 = 326311989
BaseRepresentation
bin1101100010110…
…1000111011101
310221220010210100
43120231013131
5104020323101
65345331313
71256600463
oct330550735
9127803710
1056807901
112a080687
1217036b39
13ba00057
14778a833
154ec1e86
hex362d1dd

56807901 has 6 divisors (see below), whose sum is σ = 82055870. Its totient is φ = 37871928.

The previous prime is 56807879. The next prime is 56807909. The reversal of 56807901 is 10970865.

56807901 is a `hidden beast` number, since 568 + 0 + 7 + 90 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 28611801 + 28196100 = 5349^2 + 5310^2 .

It is not a de Polignac number, because 56807901 - 25 = 56807869 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 (56807909) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3155986 + ... + 3156003.

Almost surely, 256807901 is an apocalyptic number.

It is an amenable number.

56807901 is a deficient number, since it is larger than the sum of its proper divisors (25247969).

56807901 is a wasteful number, since it uses less digits than its factorization.

56807901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6311995 (or 6311992 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 36.

The square root of 56807901 is about 7537.1016312638. The cubic root of 56807901 is about 384.4172913213.

The spelling of 56807901 in words is "fifty-six million, eight hundred seven thousand, nine hundred one".

Divisors: 1 3 9 6311989 18935967 56807901