51612791 has 8 divisors (see below), whose sum is σ = 52351200. Its totient is φ = 50878080.

The previous prime is 51612751. The next prime is 51612793. The reversal of 51612791 is 19721615.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 51612791 - 2¹⁰ = 51611767 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51612793) 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, 38411 + ... + 39731.

It is an arithmetic number, because the mean of its divisors is an integer number (6543900).

Almost surely, 2^51612791 is an apocalyptic number.

51612791 is a deficient number, since it is larger than the sum of its proper divisors (738409).

51612791 is a wasteful number, since it uses less digits than its factorization.

51612791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1849.

The product of its digits is 3780, while the sum is 32.

The square root of 51612791 is about 7184.2042704812. The cubic root of 51612791 is about 372.3223566277.

The spelling of 51612791 in words is "fifty-one million, six hundred twelve thousand, seven hundred ninety-one".