2521263604 has 12 divisors (see below), whose sum is σ = 4554540928. Its totient is φ = 1219966200.

The previous prime is 2521263601. The next prime is 2521263617. The reversal of 2521263604 is 4063621252.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2521263601) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10166262 + ... + 10166509.

Almost surely, 2^2521263604 is an apocalyptic number.

It is an amenable number.

2521263604 is a deficient number, since it is larger than the sum of its proper divisors (2033277324).

2521263604 is a wasteful number, since it uses less digits than its factorization.

2521263604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20332806 (or 20332804 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 2521263604 is about 50212.1858118127. The cubic root of 2521263604 is about 1361.0458369835.

Adding to 2521263604 its reverse (4063621252), we get a palindrome (6584884856).

The spelling of 2521263604 in words is "two billion, five hundred twenty-one million, two hundred sixty-three thousand, six hundred four".