51997574 has 8 divisors (see below), whose sum is σ = 78366648. Its totient is φ = 25875360.

The previous prime is 51997541. The next prime is 51997597. The reversal of 51997574 is 47579915.

51997574 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 61187 + ... + 62030.

It is an arithmetic number, because the mean of its divisors is an integer number (9795831).

Almost surely, 2^51997574 is an apocalyptic number.

51997574 is a deficient number, since it is larger than the sum of its proper divisors (26369074).

51997574 is a wasteful number, since it uses less digits than its factorization.

51997574 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123430.

The product of its digits is 396900, while the sum is 47.

The square root of 51997574 is about 7210.9343361315. The cubic root of 51997574 is about 373.2453110581.

The spelling of 51997574 in words is "fifty-one million, nine hundred ninety-seven thousand, five hundred seventy-four".