55902565 has 8 divisors (see below), whose sum is σ = 67534200. Its totient is φ = 44421312.

The previous prime is 55902563. The next prime is 55902607. The reversal of 55902565 is 56520955.

It can be written as a sum of positive squares in 4 ways, for example, as 1747684 + 54154881 = 1322^2 + 7359^2 .

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 55902565 - 2¹ = 55902563 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55902563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36774 + ... + 38263.

It is an arithmetic number, because the mean of its divisors is an integer number (8441775).

Almost surely, 2^55902565 is an apocalyptic number.

It is an amenable number.

55902565 is a deficient number, since it is larger than the sum of its proper divisors (11631635).

55902565 is a wasteful number, since it uses less digits than its factorization.

55902565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75191.

The product of its (nonzero) digits is 67500, while the sum is 37.

The square root of 55902565 is about 7476.8017895354. The cubic root of 55902565 is about 382.3642191104.

The spelling of 55902565 in words is "fifty-five million, nine hundred two thousand, five hundred sixty-five".