551640452 has 72 divisors (see below), whose sum is σ = 1126137600. Its totient is φ = 235604160.

The previous prime is 551640451. The next prime is 551640469. The reversal of 551640452 is 254046155.

It is not an unprimeable number, because it can be changed into a prime (551640451) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2050574 + ... + 2050842.

It is an arithmetic number, because the mean of its divisors is an integer number (15640800).

Almost surely, 2^551640452 is an apocalyptic number.

It is an amenable number.

551640452 is an abundant number, since it is smaller than the sum of its proper divisors (574497148).

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

551640452 is a wasteful number, since it uses less digits than its factorization.

551640452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 537 (or 524 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 32.

The square root of 551640452 is about 23487.0273129658. The cubic root of 551640452 is about 820.1350422050.

The spelling of 551640452 in words is "five hundred fifty-one million, six hundred forty thousand, four hundred fifty-two".