51863274 has 32 divisors (see below), whose sum is σ = 121320000. Its totient is φ = 16377552.

The previous prime is 51863267. The next prime is 51863291. The reversal of 51863274 is 47236815.

51863274 is a `hidden beast` number, since 5 + 18 + 632 + 7 + 4 = 666.

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, 24249 + ... + 26300.

It is an arithmetic number, because the mean of its divisors is an integer number (3791250).

Almost surely, 2^51863274 is an apocalyptic number.

51863274 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

51863274 is an abundant number, since it is smaller than the sum of its proper divisors (69456726).

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

51863274 is a wasteful number, since it uses less digits than its factorization.

51863274 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50579 (or 50573 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 51863274 is about 7201.6160686335. The cubic root of 51863274 is about 372.9236930829.

The spelling of 51863274 in words is "fifty-one million, eight hundred sixty-three thousand, two hundred seventy-four".