53623612531 has 2 divisors, whose sum is σ = 53623612532. Its totient is φ = 53623612530.

The previous prime is 53623612513. The next prime is 53623612547. The reversal of 53623612531 is 13521632635.

Together with previous prime (53623612513) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 53623612531 - 2⁷ = 53623612403 is a prime.

It is a super-2 number, since 2×53623612531² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (53623612571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26811806265 + 26811806266.

It is an arithmetic number, because the mean of its divisors is an integer number (26811806266).

Almost surely, 2^53623612531 is an apocalyptic number.

53623612531 is a deficient number, since it is larger than the sum of its proper divisors (1).

53623612531 is an equidigital number, since it uses as much as digits as its factorization.

53623612531 is an evil number, because the sum of its binary digits is even.

The product of its digits is 97200, while the sum is 37.

The spelling of 53623612531 in words is "fifty-three billion, six hundred twenty-three million, six hundred twelve thousand, five hundred thirty-one".