164625550 has 12 divisors (see below), whose sum is σ = 306203616. Its totient is φ = 65850200.

The previous prime is 164625541. The next prime is 164625551. The reversal of 164625550 is 55526461.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164625551) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1646206 + ... + 1646305.

It is an arithmetic number, because the mean of its divisors is an integer number (25516968).

Almost surely, 2^164625550 is an apocalyptic number.

164625550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

164625550 is a deficient number, since it is larger than the sum of its proper divisors (141578066).

164625550 is a wasteful number, since it uses less digits than its factorization.

164625550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3292523 (or 3292518 counting only the distinct ones).

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

The square root of 164625550 is about 12830.6488534290. The cubic root of 164625550 is about 548.0654347601.

The spelling of 164625550 in words is "one hundred sixty-four million, six hundred twenty-five thousand, five hundred fifty".