2521264654 has 4 divisors (see below), whose sum is σ = 3781896984. Its totient is φ = 1260632326.

The previous prime is 2521264651. The next prime is 2521264657. The reversal of 2521264654 is 4564621252.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (2521264651) and next prime (2521264657).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2521264651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 630316162 + ... + 630316165.

It is an arithmetic number, because the mean of its divisors is an integer number (945474246).

Almost surely, 2^2521264654 is an apocalyptic number.

2521264654 is a deficient number, since it is larger than the sum of its proper divisors (1260632330).

2521264654 is a wasteful number, since it uses less digits than its factorization.

2521264654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1260632329.

The product of its digits is 115200, while the sum is 37.

The square root of 2521264654 is about 50212.1962674408. The cubic root of 2521264654 is about 1361.0460259229.

The spelling of 2521264654 in words is "two billion, five hundred twenty-one million, two hundred sixty-four thousand, six hundred fifty-four".