51097031 has 8 divisors (see below), whose sum is σ = 51559200. Its totient is φ = 50637312.

The previous prime is 51097003. The next prime is 51097049. The reversal of 51097031 is 13079015.

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 51097031 - 2⁶ = 51096967 is a prime.

It is a super-2 number, since 2×51097031² = 5221813154029922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51097051) 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, 85871 + ... + 86463.

It is an arithmetic number, because the mean of its divisors is an integer number (6444900).

Almost surely, 2^51097031 is an apocalyptic number.

51097031 is a deficient number, since it is larger than the sum of its proper divisors (462169).

51097031 is a wasteful number, since it uses less digits than its factorization.

51097031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1225.

The product of its (nonzero) digits is 945, while the sum is 26.

The square root of 51097031 is about 7148.2187291660. The cubic root of 51097031 is about 371.0780126702.

The spelling of 51097031 in words is "fifty-one million, ninety-seven thousand, thirty-one".