2521662501 has 8 divisors (see below), whose sum is σ = 3539175520. Its totient is φ = 1592628912.

The previous prime is 2521662487. The next prime is 2521662503. The reversal of 2521662501 is 1052661252.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2521662501 - 2²⁶ = 2454553637 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2521662503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22119790 + ... + 22119903.

It is an arithmetic number, because the mean of its divisors is an integer number (442396940).

Almost surely, 2^2521662501 is an apocalyptic number.

It is an amenable number.

2521662501 is a deficient number, since it is larger than the sum of its proper divisors (1017513019).

2521662501 is a wasteful number, since it uses less digits than its factorization.

2521662501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44239715.

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 2521662501 is about 50216.1577681925. The cubic root of 2521662501 is about 1361.1176116379.

The spelling of 2521662501 in words is "two billion, five hundred twenty-one million, six hundred sixty-two thousand, five hundred one".