551568402 has 144 divisors (see below), whose sum is σ = 1531202400. Its totient is φ = 141886080.

The previous prime is 551568401. The next prime is 551568419. The reversal of 551568402 is 204865155.

551568402 is a `hidden beast` number, since 5 + 51 + 568 + 40 + 2 = 666.

It is not an unprimeable number, because it can be changed into a prime (551568401) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1348374 + ... + 1348782.

It is an arithmetic number, because the mean of its divisors is an integer number (10633350).

Almost surely, 2^551568402 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 551568402, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (765601200).

551568402 is an abundant number, since it is smaller than the sum of its proper divisors (979633998).

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

551568402 is a wasteful number, since it uses less digits than its factorization.

551568402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 581 (or 571 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 36.

The square root of 551568402 is about 23485.4934374392. The cubic root of 551568402 is about 820.0993345852.

The spelling of 551568402 in words is "five hundred fifty-one million, five hundred sixty-eight thousand, four hundred two".