811572050 has 12 divisors (see below), whose sum is σ = 1509524106. Its totient is φ = 324628800.

The previous prime is 811572031. The next prime is 811572059. The reversal of 811572050 is 50275118.

It can be written as a sum of positive squares in 3 ways, for example, as 433930561 + 377641489 = 20831^2 + 19433^2 .

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (811572059) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8115671 + ... + 8115770.

Almost surely, 2^811572050 is an apocalyptic number.

811572050 is a deficient number, since it is larger than the sum of its proper divisors (697952056).

811572050 is a wasteful number, since it uses less digits than its factorization.

811572050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16231453 (or 16231448 counting only the distinct ones).

The product of its (nonzero) digits is 2800, while the sum is 29.

The square root of 811572050 is about 28488.1036574918. The cubic root of 811572050 is about 932.7724145230.

The spelling of 811572050 in words is "eight hundred eleven million, five hundred seventy-two thousand, fifty".