53516531 has 2 divisors, whose sum is σ = 53516532. Its totient is φ = 53516530.

The previous prime is 53516497. The next prime is 53516557. The reversal of 53516531 is 13561535.

53516531 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53516531 is a prime.

It is a super-2 number, since 2×53516531² = 5728038180547922, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 53516494 and 53516503.

It is not a weakly prime, because it can be changed into another prime (53516131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26758265 + 26758266.

It is an arithmetic number, because the mean of its divisors is an integer number (26758266).

Almost surely, 2^53516531 is an apocalyptic number.

53516531 is a deficient number, since it is larger than the sum of its proper divisors (1).

53516531 is an equidigital number, since it uses as much as digits as its factorization.

53516531 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6750, while the sum is 29.

The square root of 53516531 is about 7315.4993677807. The cubic root of 53516531 is about 376.8449080277.

The spelling of 53516531 in words is "fifty-three million, five hundred sixteen thousand, five hundred thirty-one".