155090916 has 24 divisors (see below), whose sum is σ = 402087840. Its totient is φ = 51696936.

The previous prime is 155090893. The next prime is 155090917. The reversal of 155090916 is 619090551.

155090916 is a `hidden beast` number, since 1 + 550 + 90 + 9 + 16 = 666.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (155090917) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 717906 + ... + 718121.

It is an arithmetic number, because the mean of its divisors is an integer number (16753660).

Almost surely, 2^155090916 is an apocalyptic number.

It is an amenable number.

155090916 is an abundant number, since it is smaller than the sum of its proper divisors (246996924).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

155090916 is a wasteful number, since it uses less digits than its factorization.

155090916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1436040 (or 1436032 counting only the distinct ones).

The product of its (nonzero) digits is 12150, while the sum is 36.

The square root of 155090916 is about 12453.5503371529. The cubic root of 155090916 is about 537.2735412345.

The spelling of 155090916 in words is "one hundred fifty-five million, ninety thousand, nine hundred sixteen".