2152403251 has 4 divisors (see below), whose sum is σ = 2152956672. Its totient is φ = 2151849832.

The previous prime is 2152403237. The next prime is 2152403261. The reversal of 2152403251 is 1523042512.

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

It is a cyclic number.

It is not a de Polignac number, because 2152403251 - 2²¹ = 2150306099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2152403261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 270835 + ... + 278668.

It is an arithmetic number, because the mean of its divisors is an integer number (538239168).

Almost surely, 2^2152403251 is an apocalyptic number.

2152403251 is a deficient number, since it is larger than the sum of its proper divisors (553421).

2152403251 is an equidigital number, since it uses as much as digits as its factorization.

2152403251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 553420.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 2152403251 is about 46394.0001616588. Note that the first 3 decimals coincide. The cubic root of 2152403251 is about 1291.1435987917.

Adding to 2152403251 its reverse (1523042512), we get a palindrome (3675445763).

The spelling of 2152403251 in words is "two billion, one hundred fifty-two million, four hundred three thousand, two hundred fifty-one".