551474920 has 16 divisors (see below), whose sum is σ = 1240818660. Its totient is φ = 220589952.

The previous prime is 551474893. The next prime is 551474929. The reversal of 551474920 is 29474155.

It can be written as a sum of positive squares in 2 ways, for example, as 500237956 + 51236964 = 22366^2 + 7158^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 551474920.

It is not an unprimeable number, because it can be changed into a prime (551474929) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6893397 + ... + 6893476.

Almost surely, 2^551474920 is an apocalyptic number.

It is an amenable number.

551474920 is an abundant number, since it is smaller than the sum of its proper divisors (689343740).

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

551474920 is a wasteful number, since it uses less digits than its factorization.

551474920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13786884 (or 13786880 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 37.

The square root of 551474920 is about 23483.5031458256. The cubic root of 551474920 is about 820.0530007384.

The spelling of 551474920 in words is "five hundred fifty-one million, four hundred seventy-four thousand, nine hundred twenty".