2521542361 has 12 divisors (see below), whose sum is σ = 2731914768. Its totient is φ = 2326310064.

The previous prime is 2521542343. The next prime is 2521542389. The reversal of 2521542361 is 1632451252.

It is not a de Polignac number, because 2521542361 - 2⁵ = 2521542329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2521542301) 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, 471046 + ... + 476368.

It is an arithmetic number, because the mean of its divisors is an integer number (227659564).

Almost surely, 2^2521542361 is an apocalyptic number.

It is an amenable number.

2521542361 is a deficient number, since it is larger than the sum of its proper divisors (210372407).

2521542361 is a wasteful number, since it uses less digits than its factorization.

2521542361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8152 (or 8139 counting only the distinct ones).

The product of its digits is 14400, while the sum is 31.

The square root of 2521542361 is about 50214.9615254259. The cubic root of 2521542361 is about 1361.0959953078.

It can be divided in two parts, 25215 and 42361, that added together give a palindrome (67576).

The spelling of 2521542361 in words is "two billion, five hundred twenty-one million, five hundred forty-two thousand, three hundred sixty-one".