155150257 has 16 divisors (see below), whose sum is σ = 169438720. Its totient is φ = 141523200.

The previous prime is 155150251. The next prime is 155150263. The reversal of 155150257 is 752051551.

It is an interprime number because it is at equal distance from previous prime (155150251) and next prime (155150263).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-155150257 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (155150251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 141403 + ... + 142495.

It is an arithmetic number, because the mean of its divisors is an integer number (10589920).

Almost surely, 2^155150257 is an apocalyptic number.

It is an amenable number.

155150257 is a deficient number, since it is larger than the sum of its proper divisors (14288463).

155150257 is a wasteful number, since it uses less digits than its factorization.

155150257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1384.

The product of its (nonzero) digits is 8750, while the sum is 31.

The square root of 155150257 is about 12455.9326025794. The cubic root of 155150257 is about 537.3420564956.

The spelling of 155150257 in words is "one hundred fifty-five million, one hundred fifty thousand, two hundred fifty-seven".