551974881 has 8 divisors (see below), whose sum is σ = 736079040. Its totient is φ = 367926992.

The previous prime is 551974873. The next prime is 551974883. The reversal of 551974881 is 188479155.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 551974881 - 2³ = 551974873 is a prime.

It is a super-2 number, since 2×551974881² = 609352538509928322, 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 551974881.

It is not an unprimeable number, because it can be changed into a prime (551974883) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22135 + ... + 39923.

It is an arithmetic number, because the mean of its divisors is an integer number (92009880).

Almost surely, 2^551974881 is an apocalyptic number.

It is an amenable number.

551974881 is a deficient number, since it is larger than the sum of its proper divisors (184104159).

551974881 is a wasteful number, since it uses less digits than its factorization.

551974881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28135.

The product of its digits is 403200, while the sum is 48.

The square root of 551974881 is about 23494.1456750400. The cubic root of 551974881 is about 820.3007428490.

The spelling of 551974881 in words is "five hundred fifty-one million, nine hundred seventy-four thousand, eight hundred eighty-one".