551156875 has 20 divisors (see below), whose sum is σ = 690241552. Its totient is φ = 439956000.

The previous prime is 551156873. The next prime is 551156887. The reversal of 551156875 is 578651155.

It is not a de Polignac number, because 551156875 - 2¹ = 551156873 is a prime.

It is a Smith number, since the sum of its digits (43) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (551156873) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 453769 + ... + 454981.

Almost surely, 2^551156875 is an apocalyptic number.

551156875 is a deficient number, since it is larger than the sum of its proper divisors (139084677).

551156875 is an equidigital number, since it uses as much as digits as its factorization.

551156875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1960 (or 1945 counting only the distinct ones).

The product of its digits is 210000, while the sum is 43.

The square root of 551156875 is about 23476.7305006468. The cubic root of 551156875 is about 819.8953242350.

The spelling of 551156875 in words is "five hundred fifty-one million, one hundred fifty-six thousand, eight hundred seventy-five".