2552399424 has 140 divisors (see below), whose sum is σ = 7895441664. Its totient is φ = 813770496.

The previous prime is 2552399411. The next prime is 2552399441. The reversal of 2552399424 is 4249932552.

2552399424 is a `hidden beast` number, since 2 + 552 + 3 + 9 + 94 + 2 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 2552399424.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 108529 + ... + 129935.

Almost surely, 2^2552399424 is an apocalyptic number.

2552399424 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2552399424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3947720832).

2552399424 is an abundant number, since it is smaller than the sum of its proper divisors (5343042240).

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

2552399424 is a wasteful number, since it uses less digits than its factorization.

2552399424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21454 (or 21435 counting only the distinct ones).

The product of its digits is 777600, while the sum is 45.

The square root of 2552399424 is about 50521.2769434819. The cubic root of 2552399424 is about 1366.6255817380.

The spelling of 2552399424 in words is "two billion, five hundred fifty-two million, three hundred ninety-nine thousand, four hundred twenty-four".