2151241253 has 4 divisors (see below), whose sum is σ = 2458561440. Its totient is φ = 1843921068.

The previous prime is 2151241247. The next prime is 2151241297. The reversal of 2151241253 is 3521421512.

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 2151241253 - 2¹⁴ = 2151224869 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 (2151241243) 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, 153660083 + ... + 153660096.

It is an arithmetic number, because the mean of its divisors is an integer number (614640360).

Almost surely, 2^2151241253 is an apocalyptic number.

It is an amenable number.

2151241253 is a deficient number, since it is larger than the sum of its proper divisors (307320187).

2151241253 is an equidigital number, since it uses as much as digits as its factorization.

2151241253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307320186.

The product of its digits is 2400, while the sum is 26.

The square root of 2151241253 is about 46381.4753215117. The cubic root of 2151241253 is about 1290.9112110572.

Adding to 2151241253 its reverse (3521421512), we get a palindrome (5672662765).

The spelling of 2151241253 in words is "two billion, one hundred fifty-one million, two hundred forty-one thousand, two hundred fifty-three".