2151270456 has 16 divisors (see below), whose sum is σ = 5378176200. Its totient is φ = 717090144.

The previous prime is 2151270439. The next prime is 2151270461. The reversal of 2151270456 is 6540721512.

It is a congruent number.

It is an unprimeable number.

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, 44818111 + ... + 44818158.

Almost surely, 2^2151270456 is an apocalyptic number.

It is an amenable number.

2151270456 is an abundant number, since it is smaller than the sum of its proper divisors (3226905744).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2151270456 is a wasteful number, since it uses less digits than its factorization.

2151270456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89636278 (or 89636274 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 33.

The square root of 2151270456 is about 46381.7901336290. The cubic root of 2151270456 is about 1290.9170523840.

Adding to 2151270456 its reverse (6540721512), we get a palindrome (8691991968).

The spelling of 2151270456 in words is "two billion, one hundred fifty-one million, two hundred seventy thousand, four hundred fifty-six".