551040924 has 72 divisors (see below), whose sum is σ = 1561033600. Its totient is φ = 148172544.

The previous prime is 551040913. The next prime is 551040929. The reversal of 551040924 is 429040155.

It is a junction number, because it is equal to n+sod(n) for n = 551040891 and 551040900.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (551040929) 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, 12927 + ... + 35625.

Almost surely, 2^551040924 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 551040924, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (780516800).

551040924 is an abundant number, since it is smaller than the sum of its proper divisors (1009992676).

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

551040924 is a wasteful number, since it uses less digits than its factorization.

551040924 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22747 (or 22728 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 551040924 is about 23474.2608829330. The cubic root of 551040924 is about 819.8378243625.

The spelling of 551040924 in words is "five hundred fifty-one million, forty thousand, nine hundred twenty-four".