51731095 has 16 divisors (see below), whose sum is σ = 69011712. Its totient is φ = 36967680.

The previous prime is 51731087. The next prime is 51731101. The reversal of 51731095 is 59013715.

It is not a de Polignac number, because 51731095 - 2³ = 51731087 is a prime.

It is a super-2 number, since 2×51731095² = 5352212379798050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is a nialpdrome in base 13.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10822 + ... + 14851.

It is an arithmetic number, because the mean of its divisors is an integer number (4313232).

Almost surely, 2^51731095 is an apocalyptic number.

51731095 is a deficient number, since it is larger than the sum of its proper divisors (17280617).

51731095 is a wasteful number, since it uses less digits than its factorization.

51731095 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25722.

The product of its (nonzero) digits is 4725, while the sum is 31.

The square root of 51731095 is about 7192.4331766100. The cubic root of 51731095 is about 372.6066118276.

The spelling of 51731095 in words is "fifty-one million, seven hundred thirty-one thousand, ninety-five".