2521213253 has 8 divisors (see below), whose sum is σ = 2715600888. Its totient is φ = 2326889664.

The previous prime is 2521213243. The next prime is 2521213319. The reversal of 2521213253 is 3523121252.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1006602529 + 1514610724 = 31727^2 + 38918^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 2521213253 - 2³⁰ = 1447471429 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2521213213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 93575 + ... + 117467.

It is an arithmetic number, because the mean of its divisors is an integer number (339450111).

Almost surely, 2^2521213253 is an apocalyptic number.

It is an amenable number.

2521213253 is a deficient number, since it is larger than the sum of its proper divisors (194387635).

2521213253 is a wasteful number, since it uses less digits than its factorization.

2521213253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32023.

The product of its digits is 3600, while the sum is 26.

The square root of 2521213253 is about 50211.6844270335. The cubic root of 2521213253 is about 1361.0367766490.

The spelling of 2521213253 in words is "two billion, five hundred twenty-one million, two hundred thirteen thousand, two hundred fifty-three".