51358374 has 40 divisors (see below), whose sum is σ = 116566560. Its totient is φ = 16898544.

The previous prime is 51358327. The next prime is 51358393. The reversal of 51358374 is 47385315.

51358374 is a `hidden beast` number, since 5 + 1 + 3 + 583 + 74 = 666.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 10792 + ... + 14804.

It is an arithmetic number, because the mean of its divisors is an integer number (2914164).

Almost surely, 2^51358374 is an apocalyptic number.

51358374 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 51358374, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58283280).

51358374 is an abundant number, since it is smaller than the sum of its proper divisors (65208186).

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

51358374 is a wasteful number, since it uses less digits than its factorization.

With its successor (51358375) it forms a Ruth-Aaron pair, since the sum of their distinct prime factors is the same (4097).

With its successor (51358375) it forms an eRAP, since the sums of their prime factors are consecutive (4106 and 4107).

51358374 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4106 (or 4097 counting only the distinct ones).

The product of its digits is 50400, while the sum is 36.

The square root of 51358374 is about 7166.4757028821. The cubic root of 51358374 is about 371.7095808219.

The spelling of 51358374 in words is "fifty-one million, three hundred fifty-eight thousand, three hundred seventy-four".