51274432 has 56 divisors (see below), whose sum is σ = 111904272. Its totient is φ = 23116800.

The previous prime is 51274423. The next prime is 51274441. The reversal of 51274432 is 23447215.

It is an interprime number because it is at equal distance from previous prime (51274423) and next prime (51274441).

It is a self number, because there is not a number n which added to its sum of digits gives 51274432.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 121582 + ... + 122002.

Almost surely, 2^51274432 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 51274432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55952136).

51274432 is an abundant number, since it is smaller than the sum of its proper divisors (60629840).

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

51274432 is a wasteful number, since it uses less digits than its factorization.

51274432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 617 (or 607 counting only the distinct ones).

The product of its digits is 6720, while the sum is 28.

The square root of 51274432 is about 7160.6167332151. The cubic root of 51274432 is about 371.5069584911.

It can be divided in two parts, 5127 and 4432, that added together give a palindrome (9559).

The spelling of 51274432 in words is "fifty-one million, two hundred seventy-four thousand, four hundred thirty-two".