53099531 has 2 divisors, whose sum is σ = 53099532. Its totient is φ = 53099530.

The previous prime is 53099513. The next prime is 53099533. The reversal of 53099531 is 13599035.

Together with previous prime (53099513) 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 53099531 - 2¹⁸ = 52837387 is a prime.

It is a super-2 number, since 2×53099531² = 5639120384839922, which contains 22 as substring.

Together with 53099533, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 53099491 and 53099500.

It is not a weakly prime, because it can be changed into another prime (53099533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26549765 + 26549766.

It is an arithmetic number, because the mean of its divisors is an integer number (26549766).

Almost surely, 2^53099531 is an apocalyptic number.

53099531 is a deficient number, since it is larger than the sum of its proper divisors (1).

53099531 is an equidigital number, since it uses as much as digits as its factorization.

53099531 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18225, while the sum is 35.

The square root of 53099531 is about 7286.9425001162. The cubic root of 53099531 is about 375.8635647854.

The spelling of 53099531 in words is "fifty-three million, ninety-nine thousand, five hundred thirty-one".