51326031 has 8 divisors (see below), whose sum is σ = 68467840. Its totient is φ = 34200792.

The previous prime is 51326017. The next prime is 51326059. The reversal of 51326031 is 13062315.

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

It is not a de Polignac number, because 51326031 - 2¹³ = 51317839 is a prime.

It is a super-2 number, since 2×51326031² = 5268722916425922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51325989 and 51326007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51326131) 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, 9660 + ... + 13998.

It is an arithmetic number, because the mean of its divisors is an integer number (8558480).

Almost surely, 2^51326031 is an apocalyptic number.

51326031 is a deficient number, since it is larger than the sum of its proper divisors (17141809).

51326031 is a wasteful number, since it uses less digits than its factorization.

51326031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8285.

The product of its (nonzero) digits is 540, while the sum is 21.

The square root of 51326031 is about 7164.2187990038. The cubic root of 51326031 is about 371.6315362462.

Adding to 51326031 its reverse (13062315), we get a palindrome (64388346).

The spelling of 51326031 in words is "fifty-one million, three hundred twenty-six thousand, thirty-one".