155165250 has 32 divisors (see below), whose sum is σ = 387294336. Its totient is φ = 41377200.

The previous prime is 155165249. The next prime is 155165251. The reversal of 155165250 is 52561551.

155165250 is digitally balanced in base 3, because in such base 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 (155165249) and next prime (155165251).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155165251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 102694 + ... + 104193.

It is an arithmetic number, because the mean of its divisors is an integer number (12102948).

Almost surely, 2^155165250 is an apocalyptic number.

155165250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

155165250 is an abundant number, since it is smaller than the sum of its proper divisors (232129086).

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

155165250 is a wasteful number, since it uses less digits than its factorization.

155165250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206907 (or 206897 counting only the distinct ones).

The product of its (nonzero) digits is 7500, while the sum is 30.

The square root of 155165250 is about 12456.5344297682. The cubic root of 155165250 is about 537.3593646847.

The spelling of 155165250 in words is "one hundred fifty-five million, one hundred sixty-five thousand, two hundred fifty".