155664250 has 32 divisors (see below), whose sum is σ = 333036288. Its totient is φ = 53370000.

The previous prime is 155664247. The next prime is 155664337. The reversal of 155664250 is 52466551.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42726 + ... + 46225.

It is an arithmetic number, because the mean of its divisors is an integer number (10407384).

Almost surely, 2^155664250 is an apocalyptic number.

155664250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

155664250 is an abundant number, since it is smaller than the sum of its proper divisors (177372038).

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

155664250 is an equidigital number, since it uses as much as digits as its factorization.

155664250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88975 (or 88965 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 34.

The square root of 155664250 is about 12476.5480001481. The cubic root of 155664250 is about 537.9347843173.

The spelling of 155664250 in words is "one hundred fifty-five million, six hundred sixty-four thousand, two hundred fifty".