155164072 has 64 divisors (see below), whose sum is σ = 353652480. Its totient is φ = 62380032.

The previous prime is 155164067. The next prime is 155164091. The reversal of 155164072 is 270461551.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67128 + ... + 69400.

It is an arithmetic number, because the mean of its divisors is an integer number (5525820).

Almost surely, 2^155164072 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 155164072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (176826240).

155164072 is an abundant number, since it is smaller than the sum of its proper divisors (198488408).

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

155164072 is a wasteful number, since it uses less digits than its factorization.

155164072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2362 (or 2358 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 31.

The square root of 155164072 is about 12456.4871452589. The cubic root of 155164072 is about 537.3580048206.

The spelling of 155164072 in words is "one hundred fifty-five million, one hundred sixty-four thousand, seventy-two".