551564364 has 48 divisors (see below), whose sum is σ = 1415490048. Its totient is φ = 166099008.

The previous prime is 551564341. The next prime is 551564381. The reversal of 551564364 is 463465155.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30282 + ... + 44945.

It is an arithmetic number, because the mean of its divisors is an integer number (29489376).

Almost surely, 2^551564364 is an apocalyptic number.

It is an amenable number.

551564364 is an abundant number, since it is smaller than the sum of its proper divisors (863925684).

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

551564364 is a wasteful number, since it uses less digits than its factorization.

551564364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75294 (or 75292 counting only the distinct ones).

The product of its digits is 216000, while the sum is 39.

The square root of 551564364 is about 23485.4074693202. The cubic root of 551564364 is about 820.0973332806.

The spelling of 551564364 in words is "five hundred fifty-one million, five hundred sixty-four thousand, three hundred sixty-four".