2151252553 has 4 divisors (see below), whose sum is σ = 2175424020. Its totient is φ = 2127081088.

The previous prime is 2151252527. The next prime is 2151252569. The reversal of 2151252553 is 3552521512.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 454883584 + 1696368969 = 21328^2 + 41187^2 .

It is a cyclic number.

It is not a de Polignac number, because 2151252553 - 2¹⁷ = 2151121481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2151252503) 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, 12085600 + ... + 12085777.

It is an arithmetic number, because the mean of its divisors is an integer number (543856005).

Almost surely, 2^2151252553 is an apocalyptic number.

It is an amenable number.

2151252553 is a deficient number, since it is larger than the sum of its proper divisors (24171467).

2151252553 is an equidigital number, since it uses as much as digits as its factorization.

2151252553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24171466.

The product of its digits is 15000, while the sum is 31.

The square root of 2151252553 is about 46381.5971372267. The cubic root of 2151252553 is about 1290.9134713447.

The spelling of 2151252553 in words is "two billion, one hundred fifty-one million, two hundred fifty-two thousand, five hundred fifty-three".