2151531253 has 8 divisors (see below), whose sum is σ = 2277285920. Its totient is φ = 2027028240.

The previous prime is 2151531227. The next prime is 2151531289. The reversal of 2151531253 is 3521351512.

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 2151531253 - 2⁹ = 2151530741 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 (2151537253) 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, 309375 + ... + 316252.

It is an arithmetic number, because the mean of its divisors is an integer number (284660740).

Almost surely, 2^2151531253 is an apocalyptic number.

It is an amenable number.

2151531253 is a deficient number, since it is larger than the sum of its proper divisors (125754667).

2151531253 is a wasteful number, since it uses less digits than its factorization.

2151531253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 625827.

The product of its digits is 4500, while the sum is 28.

The square root of 2151531253 is about 46384.6014642791. The cubic root of 2151531253 is about 1290.9692159307.

Adding to 2151531253 its reverse (3521351512), we get a palindrome (5672882765).

The spelling of 2151531253 in words is "two billion, one hundred fifty-one million, five hundred thirty-one thousand, two hundred fifty-three".