51808074 has 8 divisors (see below), whose sum is σ = 103616160. Its totient is φ = 17269356.

The previous prime is 51808069. The next prime is 51808091. The reversal of 51808074 is 47080815.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

51808074 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4317334 + ... + 4317345.

It is an arithmetic number, because the mean of its divisors is an integer number (12952020).

Almost surely, 2^51808074 is an apocalyptic number.

51808074 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

51808074 is a wasteful number, since it uses less digits than its factorization.

51808074 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8634684.

The product of its (nonzero) digits is 8960, while the sum is 33.

The square root of 51808074 is about 7197.7825752102. The cubic root of 51808074 is about 372.7913406245.

Adding to 51808074 its reverse (47080815), we get a palindrome (98888889).

The spelling of 51808074 in words is "fifty-one million, eight hundred eight thousand, seventy-four".