155251887 has 16 divisors (see below), whose sum is σ = 242077440. Its totient is φ = 86651712.

The previous prime is 155251853. The next prime is 155251897. The reversal of 155251887 is 788152551.

155251887 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 155251887 - 2⁶ = 155251823 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155251897) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 85062 + ... + 86867.

It is an arithmetic number, because the mean of its divisors is an integer number (15129840).

Almost surely, 2^155251887 is an apocalyptic number.

155251887 is a deficient number, since it is larger than the sum of its proper divisors (86825553).

155251887 is a wasteful number, since it uses less digits than its factorization.

155251887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171982.

The product of its digits is 112000, while the sum is 42.

The square root of 155251887 is about 12460.0115168486. The cubic root of 155251887 is about 537.4593581673.

The spelling of 155251887 in words is "one hundred fifty-five million, two hundred fifty-one thousand, eight hundred eighty-seven".