1157372506 has 16 divisors (see below), whose sum is σ = 1784275560. Its totient is φ = 562636800.

The previous prime is 1157372473. The next prime is 1157372521. The reversal of 1157372506 is 6052737511.

It can be written as a sum of positive squares in 4 ways, for example, as 1140075225 + 17297281 = 33765^2 + 4159^2 .

It is a super-2 number, since 2×1157372506² = 2679022235289440072, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 113590 + ... + 123358.

Almost surely, 2^1157372506 is an apocalyptic number.

1157372506 is a deficient number, since it is larger than the sum of its proper divisors (626903054).

1157372506 is a wasteful number, since it uses less digits than its factorization.

1157372506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11409.

The product of its (nonzero) digits is 44100, while the sum is 37.

The square root of 1157372506 is about 34020.1779242849. The cubic root of 1157372506 is about 1049.9236546154.

It can be divided in two parts, 11573 and 72506, that multiplied together give a palindrome (839111938).

The spelling of 1157372506 in words is "one billion, one hundred fifty-seven million, three hundred seventy-two thousand, five hundred six".