51291794 has 16 divisors (see below), whose sum is σ = 82874880. Its totient is φ = 23738880.

The previous prime is 51291791. The next prime is 51291797. The reversal of 51291794 is 49719215.

It is an interprime number because it is at equal distance from previous prime (51291791) and next prime (51291797).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (51291791) 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, 16559 + ... + 19410.

It is an arithmetic number, because the mean of its divisors is an integer number (5179680).

Almost surely, 2^51291794 is an apocalyptic number.

51291794 is a deficient number, since it is larger than the sum of its proper divisors (31583086).

51291794 is a wasteful number, since it uses less digits than its factorization.

51291794 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36025.

The product of its digits is 22680, while the sum is 38.

The square root of 51291794 is about 7161.8289563491. The cubic root of 51291794 is about 371.5488856640.

The spelling of 51291794 in words is "fifty-one million, two hundred ninety-one thousand, seven hundred ninety-four".