55765159 has 2 divisors, whose sum is σ = 55765160. Its totient is φ = 55765158.

The previous prime is 55765147. The next prime is 55765181. The reversal of 55765159 is 95156755.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55765159 - 2²¹ = 53668007 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55765139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27882579 + 27882580.

It is an arithmetic number, because the mean of its divisors is an integer number (27882580).

Almost surely, 2^55765159 is an apocalyptic number.

55765159 is a deficient number, since it is larger than the sum of its proper divisors (1).

55765159 is an equidigital number, since it uses as much as digits as its factorization.

55765159 is an evil number, because the sum of its binary digits is even.

The product of its digits is 236250, while the sum is 43.

The square root of 55765159 is about 7467.6073142607. The cubic root of 55765159 is about 382.0506840454.

The spelling of 55765159 in words is "fifty-five million, seven hundred sixty-five thousand, one hundred fifty-nine".