51040791 has 6 divisors (see below), whose sum is σ = 73725600. Its totient is φ = 34027188.

The previous prime is 51040763. The next prime is 51040793. The reversal of 51040791 is 19704015.

It is not a de Polignac number, because 51040791 - 2⁶ = 51040727 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51040793) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2835591 + ... + 2835608.

It is an arithmetic number, because the mean of its divisors is an integer number (12287600).

Almost surely, 2^51040791 is an apocalyptic number.

51040791 is a deficient number, since it is larger than the sum of its proper divisors (22684809).

51040791 is a wasteful number, since it uses less digits than its factorization.

51040791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5671205 (or 5671202 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 27.

The square root of 51040791 is about 7144.2837989542. The cubic root of 51040791 is about 370.9418202251.

The spelling of 51040791 in words is "fifty-one million, forty thousand, seven hundred ninety-one".