2251421315 has 32 divisors (see below), whose sum is σ = 3251489472. Its totient is φ = 1474560000.

The previous prime is 2251421311. The next prime is 2251421327. The reversal of 2251421315 is 5131241522.

It is not a de Polignac number, because 2251421315 - 2² = 2251421311 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2251421311) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9086 + ... + 67715.

It is an arithmetic number, because the mean of its divisors is an integer number (101609046).

Almost surely, 2^2251421315 is an apocalyptic number.

2251421315 is a deficient number, since it is larger than the sum of its proper divisors (1000068157).

2251421315 is a wasteful number, since it uses less digits than its factorization.

2251421315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76871.

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

The square root of 2251421315 is about 47449.1445128361. The cubic root of 2251421315 is about 1310.6465574745.

Adding to 2251421315 its reverse (5131241522), we get a palindrome (7382662837).

The spelling of 2251421315 in words is "two billion, two hundred fifty-one million, four hundred twenty-one thousand, three hundred fifteen".