155650057 has 4 divisors (see below), whose sum is σ = 156875776. Its totient is φ = 154424340.

The previous prime is 155650043. The next prime is 155650073. The reversal of 155650057 is 750056551.

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 155650057 - 2¹⁵ = 155617289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (155650357) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 612669 + ... + 612922.

It is an arithmetic number, because the mean of its divisors is an integer number (39218944).

Almost surely, 2^155650057 is an apocalyptic number.

It is an amenable number.

155650057 is a deficient number, since it is larger than the sum of its proper divisors (1225719).

155650057 is a wasteful number, since it uses less digits than its factorization.

155650057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1225718.

The product of its (nonzero) digits is 26250, while the sum is 34.

The square root of 155650057 is about 12475.9792000468. The cubic root of 155650057 is about 537.9184347263.

The spelling of 155650057 in words is "one hundred fifty-five million, six hundred fifty thousand, fifty-seven".