63157572 has 18 divisors (see below), whose sum is σ = 159648398. Its totient is φ = 21052512.

The previous prime is 63157561. The next prime is 63157603. The reversal of 63157572 is 27575136.

63157572 is a `hidden beast` number, since 6 + 31 + 57 + 572 = 666.

63157572 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 32421636 + 30735936 = 5694^2 + 5544^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 1754377 = 63157572 / (6 + 3 + 1 + 5 + 7 + 5 + 7 + 2).

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 877153 + ... + 877224.

Almost surely, 2^63157572 is an apocalyptic number.

It is an amenable number.

63157572 is an abundant number, since it is smaller than the sum of its proper divisors (96490826).

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

63157572 is a wasteful number, since it uses less digits than its factorization.

63157572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1754387 (or 1754382 counting only the distinct ones).

The product of its digits is 44100, while the sum is 36.

The square root of 63157572 is about 7947.1738372833. The cubic root of 63157572 is about 398.2371842810.

The spelling of 63157572 in words is "sixty-three million, one hundred fifty-seven thousand, five hundred seventy-two".