157568972 has 12 divisors (see below), whose sum is σ = 300813576. Its totient is φ = 71622240.

The previous prime is 157568969. The next prime is 157568981. The reversal of 157568972 is 279865751.

157568972 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 157568972.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1790513 + ... + 1790600.

It is an arithmetic number, because the mean of its divisors is an integer number (25067798).

Almost surely, 2^157568972 is an apocalyptic number.

It is an amenable number.

157568972 is a deficient number, since it is larger than the sum of its proper divisors (143244604).

157568972 is a wasteful number, since it uses less digits than its factorization.

157568972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3581128 (or 3581126 counting only the distinct ones).

The product of its digits is 1058400, while the sum is 50.

The square root of 157568972 is about 12552.6480074923. The cubic root of 157568972 is about 540.1199687728.

The spelling of 157568972 in words is "one hundred fifty-seven million, five hundred sixty-eight thousand, nine hundred seventy-two".