551138692 has 24 divisors (see below), whose sum is σ = 1039741976. Its totient is φ = 254112768.

The previous prime is 551138669. The next prime is 551138699. The reversal of 551138692 is 296831155.

It can be written as a sum of positive squares in 4 ways, for example, as 53670276 + 497468416 = 7326^2 + 22304^2 .

It is not an unprimeable number, because it can be changed into a prime (551138699) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 51988 + ... + 61684.

Almost surely, 2^551138692 is an apocalyptic number.

551138692 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

551138692 is a deficient number, since it is larger than the sum of its proper divisors (488603284).

551138692 is a wasteful number, since it uses less digits than its factorization.

551138692 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10807 (or 10805 counting only the distinct ones).

The product of its digits is 64800, while the sum is 40.

The square root of 551138692 is about 23476.3432416550. The cubic root of 551138692 is about 819.8863078543.

The spelling of 551138692 in words is "five hundred fifty-one million, one hundred thirty-eight thousand, six hundred ninety-two".