551878975 has 6 divisors (see below), whose sum is σ = 684329960. Its totient is φ = 441503160.

The previous prime is 551878949. The next prime is 551878991. The reversal of 551878975 is 579878155.

It is a happy number.

It is not a de Polignac number, because 551878975 - 2²¹ = 549781823 is a prime.

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 11037555 + ... + 11037604.

Almost surely, 2^551878975 is an apocalyptic number.

551878975 is a deficient number, since it is larger than the sum of its proper divisors (132450985).

551878975 is a wasteful number, since it uses less digits than its factorization.

551878975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22075169 (or 22075164 counting only the distinct ones).

The product of its digits is 3528000, while the sum is 55.

The square root of 551878975 is about 23492.1045247121. The cubic root of 551878975 is about 820.2532308319.

The spelling of 551878975 in words is "five hundred fifty-one million, eight hundred seventy-eight thousand, nine hundred seventy-five".