51775374 has 64 divisors (see below), whose sum is σ = 122798592. Its totient is φ = 14246400.

The previous prime is 51775349. The next prime is 51775379. The reversal of 51775374 is 47357715.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51775379) 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, 184114 + ... + 184394.

It is an arithmetic number, because the mean of its divisors is an integer number (1918728).

Almost surely, 2^51775374 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51775374, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61399296).

51775374 is an abundant number, since it is smaller than the sum of its proper divisors (71023218).

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

51775374 is a wasteful number, since it uses less digits than its factorization.

51775374 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 441.

The product of its digits is 102900, while the sum is 39.

The square root of 51775374 is about 7195.5106837528. The cubic root of 51775374 is about 372.7128918324.

The spelling of 51775374 in words is "fifty-one million, seven hundred seventy-five thousand, three hundred seventy-four".