2531157653 has 4 divisors (see below), whose sum is σ = 2554813440. Its totient is φ = 2507501868.

The previous prime is 2531157649. The next prime is 2531157677. The reversal of 2531157653 is 3567511352.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2531157653 - 2² = 2531157649 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 (2531157253) 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, 11827733 + ... + 11827946.

It is an arithmetic number, because the mean of its divisors is an integer number (638703360).

Almost surely, 2^2531157653 is an apocalyptic number.

It is an amenable number.

2531157653 is a deficient number, since it is larger than the sum of its proper divisors (23655787).

2531157653 is a wasteful number, since it uses less digits than its factorization.

2531157653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23655786.

The product of its digits is 94500, while the sum is 38.

The square root of 2531157653 is about 50310.6117335101. The cubic root of 2531157653 is about 1362.8238710265.

The spelling of 2531157653 in words is "two billion, five hundred thirty-one million, one hundred fifty-seven thousand, six hundred fifty-three".