164485572 has 24 divisors (see below), whose sum is σ = 394173696. Its totient is φ = 53346528.

The previous prime is 164485567. The next prime is 164485577. The reversal of 164485572 is 275584461.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (164485567) and next prime (164485577).

It is not an unprimeable number, because it can be changed into a prime (164485577) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 184788 + ... + 185675.

It is an arithmetic number, because the mean of its divisors is an integer number (16423904).

Almost surely, 2^164485572 is an apocalyptic number.

164485572 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

164485572 is an abundant number, since it is smaller than the sum of its proper divisors (229688124).

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

164485572 is a wasteful number, since it uses less digits than its factorization.

164485572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 370507 (or 370505 counting only the distinct ones).

The product of its digits is 268800, while the sum is 42.

The square root of 164485572 is about 12825.1928640469. The cubic root of 164485572 is about 547.9100541455.

The spelling of 164485572 in words is "one hundred sixty-four million, four hundred eighty-five thousand, five hundred seventy-two".