551521652 has 24 divisors (see below), whose sum is σ = 1089214560. Its totient is φ = 242046560.

The previous prime is 551521639. The next prime is 551521693. The reversal of 551521652 is 256125155.

It is a super-2 number, since 2×551521652² = 608352265249618208, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 214838 + ... + 217389.

It is an arithmetic number, because the mean of its divisors is an integer number (45383940).

Almost surely, 2^551521652 is an apocalyptic number.

It is an amenable number.

551521652 is a deficient number, since it is larger than the sum of its proper divisors (537692908).

551521652 is a wasteful number, since it uses less digits than its factorization.

551521652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 432271 (or 432269 counting only the distinct ones).

The product of its digits is 15000, while the sum is 32.

The square root of 551521652 is about 23484.4981211011. The cubic root of 551521652 is about 820.0761638555.

The spelling of 551521652 in words is "five hundred fifty-one million, five hundred twenty-one thousand, six hundred fifty-two".