816912552 has 32 divisors (see below), whose sum is σ = 2045476800. Its totient is φ = 271878144.

The previous prime is 816912541. The next prime is 816912583. The reversal of 816912552 is 255219618.

It is a super-2 number, since 2×816912552² = 1334692235230305408, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 816912552.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10777 + ... + 41832.

It is an arithmetic number, because the mean of its divisors is an integer number (63921150).

Almost surely, 2^816912552 is an apocalyptic number.

It is an amenable number.

816912552 is an abundant number, since it is smaller than the sum of its proper divisors (1228564248).

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

816912552 is a wasteful number, since it uses less digits than its factorization.

816912552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53265 (or 53261 counting only the distinct ones).

The product of its digits is 43200, while the sum is 39.

The square root of 816912552 is about 28581.6821058523. The cubic root of 816912552 is about 934.8139609078.

The spelling of 816912552 in words is "eight hundred sixteen million, nine hundred twelve thousand, five hundred fifty-two".