155057136 has 160 divisors (see below), whose sum is σ = 467970048. Its totient is φ = 43806720.

The previous prime is 155057129. The next prime is 155057137. The reversal of 155057136 is 631750551.

155057136 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 155057097 and 155057106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155057137) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 498421 + ... + 498731.

Almost surely, 2^155057136 is an apocalyptic number.

155057136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 155057136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (233985024).

155057136 is an abundant number, since it is smaller than the sum of its proper divisors (312912912).

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

155057136 is a wasteful number, since it uses less digits than its factorization.

155057136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 399 (or 393 counting only the distinct ones).

The product of its (nonzero) digits is 15750, while the sum is 33.

The square root of 155057136 is about 12452.1940235446. The cubic root of 155057136 is about 537.2345309591.

The spelling of 155057136 in words is "one hundred fifty-five million, fifty-seven thousand, one hundred thirty-six".