55765157 has 4 divisors (see below), whose sum is σ = 63731616. Its totient is φ = 47798700.

The previous prime is 55765147. The next prime is 55765159. The reversal of 55765157 is 75156755.

55765157 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 55765157 - 2⁶ = 55765093 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 (55765159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3983219 + ... + 3983232.

It is an arithmetic number, because the mean of its divisors is an integer number (15932904).

Almost surely, 2^55765157 is an apocalyptic number.

It is an amenable number.

55765157 is a deficient number, since it is larger than the sum of its proper divisors (7966459).

55765157 is an equidigital number, since it uses as much as digits as its factorization.

55765157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7966458.

The product of its digits is 183750, while the sum is 41.

The square root of 55765157 is about 7467.6071803490. The cubic root of 55765157 is about 382.0506794781.

The spelling of 55765157 in words is "fifty-five million, seven hundred sixty-five thousand, one hundred fifty-seven".