51062531 has 4 divisors (see below), whose sum is σ = 54990432. Its totient is φ = 47134632.

The previous prime is 51062497. The next prime is 51062567. The reversal of 51062531 is 13526015.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13526015 = 5 ⋅2705203.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51062531 is a prime.

It is a super-2 number, since 2×51062531² = 5214764144251922, 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 = 51062497 and 51062506.

It is not an unprimeable number, because it can be changed into a prime (51002531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1963931 + ... + 1963956.

It is an arithmetic number, because the mean of its divisors is an integer number (13747608).

Almost surely, 2^51062531 is an apocalyptic number.

51062531 is a deficient number, since it is larger than the sum of its proper divisors (3927901).

51062531 is a wasteful number, since it uses less digits than its factorization.

51062531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3927900.

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 51062531 is about 7145.8051330833. The cubic root of 51062531 is about 370.9944783073.

Adding to 51062531 its reverse (13526015), we get a palindrome (64588546).

The spelling of 51062531 in words is "fifty-one million, sixty-two thousand, five hundred thirty-one".