2400553521 has 12 divisors (see below), whose sum is σ = 3468715380. Its totient is φ = 1599792480.

The previous prime is 2400553511. The next prime is 2400553583. The reversal of 2400553521 is 1253550042.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1826280225 + 574273296 = 42735^2 + 23964^2 .

It is not a de Polignac number, because 2400553521 - 2⁶ = 2400553457 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2400553511) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20866 + ... + 72363.

It is an arithmetic number, because the mean of its divisors is an integer number (289059615).

Almost surely, 2^2400553521 is an apocalyptic number.

It is an amenable number.

2400553521 is a deficient number, since it is larger than the sum of its proper divisors (1068161859).

2400553521 is a wasteful number, since it uses less digits than its factorization.

2400553521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96096 (or 96093 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

The square root of 2400553521 is about 48995.4438800181. The cubic root of 2400553521 is about 1338.9688214735.

The spelling of 2400553521 in words is "two billion, four hundred million, five hundred fifty-three thousand, five hundred twenty-one".