51658074 has 80 divisors (see below), whose sum is σ = 131318880. Its totient is φ = 15046560.

The previous prime is 51658067. The next prime is 51658081. The reversal of 51658074 is 47085615.

51658074 is a `hidden beast` number, since 5 + 1 + 6 + 580 + 74 = 666.

51658074 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (51658067) and next prime (51658081).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 39369 + ... + 40659.

It is an arithmetic number, because the mean of its divisors is an integer number (1641486).

Almost surely, 2^51658074 is an apocalyptic number.

51658074 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 51658074, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65659440).

51658074 is an abundant number, since it is smaller than the sum of its proper divisors (79660806).

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

51658074 is a wasteful number, since it uses less digits than its factorization.

51658074 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1337 (or 1328 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 36.

The square root of 51658074 is about 7187.3551463664. The cubic root of 51658074 is about 372.4312117172.

The spelling of 51658074 in words is "fifty-one million, six hundred fifty-eight thousand, seventy-four".