551360881 has 8 divisors (see below), whose sum is σ = 584146944. Its totient is φ = 518614080.

The previous prime is 551360863. The next prime is 551360911. The reversal of 551360881 is 188063155.

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 551360881 - 2¹³ = 551352689 is a prime.

It is a super-2 number, since 2×551360881² = 607997642194192322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 551360881.

It is not an unprimeable number, because it can be changed into a prime (551360801) 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, 22096 + ... + 39886.

It is an arithmetic number, because the mean of its divisors is an integer number (73018368).

Almost surely, 2^551360881 is an apocalyptic number.

It is an amenable number.

551360881 is a deficient number, since it is larger than the sum of its proper divisors (32786063).

551360881 is a wasteful number, since it uses less digits than its factorization.

551360881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19631.

The product of its (nonzero) digits is 28800, while the sum is 37.

The square root of 551360881 is about 23481.0749540987. The cubic root of 551360881 is about 819.9964708355.

The spelling of 551360881 in words is "five hundred fifty-one million, three hundred sixty thousand, eight hundred eighty-one".