155138076 has 18 divisors (see below), whose sum is σ = 392154672. Its totient is φ = 51712680.

The previous prime is 155138069. The next prime is 155138083. The reversal of 155138076 is 670831551.

155138076 is a `hidden beast` number, since 1 + 551 + 38 + 0 + 76 = 666.

155138076 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (155138069) and next prime (155138083).

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 4309391 = 155138076 / (1 + 5 + 5 + 1 + 3 + 8 + 0 + 7 + 6).

It is a self number, because there is not a number n which added to its sum of digits gives 155138076.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2154660 + ... + 2154731.

Almost surely, 2^155138076 is an apocalyptic number.

It is an amenable number.

155138076 is an abundant number, since it is smaller than the sum of its proper divisors (237016596).

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

155138076 is a wasteful number, since it uses less digits than its factorization.

155138076 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4309401 (or 4309396 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 36.

The square root of 155138076 is about 12455.4436291928. The cubic root of 155138076 is about 537.3279937089.

The spelling of 155138076 in words is "one hundred fifty-five million, one hundred thirty-eight thousand, seventy-six".