6539624253 has 12 divisors (see below), whose sum is σ = 9529719420. Its totient is φ = 4321166976.

The previous prime is 6539624249. The next prime is 6539624257. The reversal of 6539624253 is 3524269356.

6539624253 is a `hidden beast` number, since 6 + 5 + 396 + 2 + 4 + 253 = 666.

It is an interprime number because it is at equal distance from previous prime (6539624249) and next prime (6539624257).

It can be written as a sum of positive squares in 2 ways, for example, as 210308004 + 6329316249 = 14502^2 + 79557^2 .

It is not a de Polignac number, because 6539624253 - 2² = 6539624249 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6539624199 and 6539624208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6539624257) 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, 3214138 + ... + 3216171.

It is an arithmetic number, because the mean of its divisors is an integer number (794143285).

Almost surely, 2^6539624253 is an apocalyptic number.

It is an amenable number.

6539624253 is a deficient number, since it is larger than the sum of its proper divisors (2990095167).

6539624253 is a wasteful number, since it uses less digits than its factorization.

6539624253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6430428 (or 6430425 counting only the distinct ones).

The product of its digits is 1166400, while the sum is 45.

The square root of 6539624253 is about 80867.9432964633. The cubic root of 6539624253 is about 1870.0401540369.

The spelling of 6539624253 in words is "six billion, five hundred thirty-nine million, six hundred twenty-four thousand, two hundred fifty-three".