51851798 has 32 divisors (see below), whose sum is σ = 87575040. Its totient is φ = 22904640.

The previous prime is 51851753. The next prime is 51851801. The reversal of 51851798 is 89715815.

It is a happy number.

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 15 ways as a sum of consecutive naturals, for example, 35111 + ... + 36557.

It is an arithmetic number, because the mean of its divisors is an integer number (2736720).

Almost surely, 2^51851798 is an apocalyptic number.

51851798 is a deficient number, since it is larger than the sum of its proper divisors (35723242).

51851798 is a wasteful number, since it uses less digits than its factorization.

51851798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1532.

The product of its digits is 100800, while the sum is 44.

The square root of 51851798 is about 7200.8192589455. The cubic root of 51851798 is about 372.8961849339.

The spelling of 51851798 in words is "fifty-one million, eight hundred fifty-one thousand, seven hundred ninety-eight".