152221572 has 24 divisors (see below), whose sum is σ = 394648800. Its totient is φ = 50740488.

The previous prime is 152221549. The next prime is 152221577. The reversal of 152221572 is 275122251.

152221572 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (152221577) 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, 704622 + ... + 704837.

It is an arithmetic number, because the mean of its divisors is an integer number (16443700).

Almost surely, 2^152221572 is an apocalyptic number.

152221572 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

152221572 is an abundant number, since it is smaller than the sum of its proper divisors (242427228).

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

152221572 is a wasteful number, since it uses less digits than its factorization.

152221572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1409472 (or 1409464 counting only the distinct ones).

The product of its digits is 2800, while the sum is 27.

The square root of 152221572 is about 12337.8106647817. The cubic root of 152221572 is about 533.9395209880.

The spelling of 152221572 in words is "one hundred fifty-two million, two hundred twenty-one thousand, five hundred seventy-two".