551138670 has 48 divisors (see below), whose sum is σ = 1443452400. Its totient is φ = 145894272.

The previous prime is 551138669. The next prime is 551138699. The reversal of 551138670 is 76831155.

551138670 is a `hidden beast` number, since 551 + 1 + 38 + 6 + 70 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10020 + ... + 34679.

It is an arithmetic number, because the mean of its divisors is an integer number (30071925).

Almost surely, 2^551138670 is an apocalyptic number.

551138670 is an abundant number, since it is smaller than the sum of its proper divisors (892313730).

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

551138670 is a wasteful number, since it uses less digits than its factorization.

551138670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44849 (or 44846 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 36.

The square root of 551138670 is about 23476.3427730982. The cubic root of 551138670 is about 819.8862969451.

The spelling of 551138670 in words is "five hundred fifty-one million, one hundred thirty-eight thousand, six hundred seventy".