2521920897 has 12 divisors (see below), whose sum is σ = 3760283904. Its totient is φ = 1627045560.

The previous prime is 2521920857. The next prime is 2521920899. The reversal of 2521920897 is 7980291252.

It is a happy number.

It is not a de Polignac number, because 2521920897 - 2⁷ = 2521920769 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2521920899) 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, 4519293 + ... + 4519850.

It is an arithmetic number, because the mean of its divisors is an integer number (313356992).

Almost surely, 2^2521920897 is an apocalyptic number.

It is an amenable number.

2521920897 is a deficient number, since it is larger than the sum of its proper divisors (1238363007).

2521920897 is a wasteful number, since it uses less digits than its factorization.

2521920897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9039180 (or 9039177 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 45.

The square root of 2521920897 is about 50218.7305395109. The cubic root of 2521920897 is about 1361.1641015143.

The spelling of 2521920897 in words is "two billion, five hundred twenty-one million, nine hundred twenty thousand, eight hundred ninety-seven".