157523144 has 8 divisors (see below), whose sum is σ = 295355910. Its totient is φ = 78761568.

The previous prime is 157523131. The next prime is 157523161. The reversal of 157523144 is 441325751.

It can be written as a sum of positive squares in only one way, i.e., 124322500 + 33200644 = 11150^2 + 5762^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 157523144.

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 as a sum of consecutive naturals, namely, 9845189 + ... + 9845204.

Almost surely, 2^157523144 is an apocalyptic number.

It is an amenable number.

157523144 is a deficient number, since it is larger than the sum of its proper divisors (137832766).

157523144 is a wasteful number, since it uses less digits than its factorization.

157523144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19690399 (or 19690395 counting only the distinct ones).

The product of its digits is 16800, while the sum is 32.

The square root of 157523144 is about 12550.8224431708. The cubic root of 157523144 is about 540.0676001333.

Adding to 157523144 its reverse (441325751), we get a palindrome (598848895).

The spelling of 157523144 in words is "one hundred fifty-seven million, five hundred twenty-three thousand, one hundred forty-four".