51826500031 has 4 divisors (see below), whose sum is σ = 51953215600. Its totient is φ = 51699784464.

The previous prime is 51826499987. The next prime is 51826500041. The reversal of 51826500031 is 13000562815.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 51826500031 - 2³³ = 43236565439 is a prime.

It is a super-2 number, since 2×51826500031² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51826499966 and 51826500002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51826500041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63357171 + ... + 63357988.

It is an arithmetic number, because the mean of its divisors is an integer number (12988303900).

Almost surely, 2^51826500031 is an apocalyptic number.

51826500031 is a deficient number, since it is larger than the sum of its proper divisors (126715569).

51826500031 is a wasteful number, since it uses less digits than its factorization.

51826500031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126715568.

The product of its (nonzero) digits is 7200, while the sum is 31.

The spelling of 51826500031 in words is "fifty-one billion, eight hundred twenty-six million, five hundred thousand, thirty-one".