51172794 has 24 divisors (see below), whose sum is σ = 111053280. Its totient is φ = 17030088.

The previous prime is 51172787. The next prime is 51172799. The reversal of 51172794 is 49727115.

It is a happy number.

51172794 is a `hidden beast` number, since 511 + 72 + 79 + 4 = 666.

It is not an unprimeable number, because it can be changed into a prime (51172799) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11379 + ... + 15225.

It is an arithmetic number, because the mean of its divisors is an integer number (4627220).

Almost surely, 2^51172794 is an apocalyptic number.

51172794 is an abundant number, since it is smaller than the sum of its proper divisors (59880486).

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

51172794 is a wasteful number, since it uses less digits than its factorization.

51172794 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4594 (or 4591 counting only the distinct ones).

The product of its digits is 17640, while the sum is 36.

The square root of 51172794 is about 7153.5161983461. The cubic root of 51172794 is about 371.2613246894.

The spelling of 51172794 in words is "fifty-one million, one hundred seventy-two thousand, seven hundred ninety-four".