2521135232 has 128 divisors (see below), whose sum is σ = 6591974400. Its totient is φ = 930493440.

The previous prime is 2521135219. The next prime is 2521135247. The reversal of 2521135232 is 2325311252.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (128).

It is a super-2 number, since 2×2521135232² = 12712245716063387648, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 180533 + ... + 193995.

It is an arithmetic number, because the mean of its divisors is an integer number (51499800).

Almost surely, 2^2521135232 is an apocalyptic number.

2521135232 is a gapful number since it is divisible by the number (22) 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 2521135232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3295987200).

2521135232 is an abundant number, since it is smaller than the sum of its proper divisors (4070839168).

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

2521135232 is a wasteful number, since it uses less digits than its factorization.

2521135232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13514 (or 13502 counting only the distinct ones).

The product of its digits is 3600, while the sum is 26.

The square root of 2521135232 is about 50210.9075002633. The cubic root of 2521135232 is about 1361.0227370399.

Adding to 2521135232 its reverse (2325311252), we get a palindrome (4846446484).

The spelling of 2521135232 in words is "two billion, five hundred twenty-one million, one hundred thirty-five thousand, two hundred thirty-two".