51377292 has 72 divisors (see below), whose sum is σ = 141173760. Its totient is φ = 15694560.

The previous prime is 51377269. The next prime is 51377317. The reversal of 51377292 is 29277315.

It is a super-2 number, since 2×51377292² = 5279252266506528, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19993 + ... + 22415.

Almost surely, 2^51377292 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51377292, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70586880).

51377292 is an abundant number, since it is smaller than the sum of its proper divisors (89796468).

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

51377292 is a wasteful number, since it uses less digits than its factorization.

51377292 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2483 (or 2478 counting only the distinct ones).

The product of its digits is 26460, while the sum is 36.

The square root of 51377292 is about 7167.7954769929. The cubic root of 51377292 is about 371.7552153054.

The spelling of 51377292 in words is "fifty-one million, three hundred seventy-seven thousand, two hundred ninety-two".