51899374 has 16 divisors (see below), whose sum is σ = 83692800. Its totient is φ = 24060024.

The previous prime is 51899347. The next prime is 51899377. The reversal of 51899374 is 47399815.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51899377) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12744 + ... + 16315.

It is an arithmetic number, because the mean of its divisors is an integer number (5230800).

Almost surely, 2^51899374 is an apocalyptic number.

51899374 is a deficient number, since it is larger than the sum of its proper divisors (31793426).

51899374 is a wasteful number, since it uses less digits than its factorization.

51899374 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29127.

The product of its digits is 272160, while the sum is 46.

The square root of 51899374 is about 7204.1220145136. The cubic root of 51899374 is about 373.0101988888.

The spelling of 51899374 in words is "fifty-one million, eight hundred ninety-nine thousand, three hundred seventy-four".