53518537 has 2 divisors, whose sum is σ = 53518538. Its totient is φ = 53518536.

The previous prime is 53518523. The next prime is 53518541. The reversal of 53518537 is 73581535.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39237696 + 14280841 = 6264^2 + 3779^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53518537 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 53518496 and 53518505.

It is not a weakly prime, because it can be changed into another prime (53518547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26759268 + 26759269.

It is an arithmetic number, because the mean of its divisors is an integer number (26759269).

Almost surely, 2^53518537 is an apocalyptic number.

It is an amenable number.

53518537 is a deficient number, since it is larger than the sum of its proper divisors (1).

53518537 is an equidigital number, since it uses as much as digits as its factorization.

53518537 is an evil number, because the sum of its binary digits is even.

The product of its digits is 63000, while the sum is 37.

The square root of 53518537 is about 7315.6364726523. The cubic root of 53518537 is about 376.8496164883.

The spelling of 53518537 in words is "fifty-three million, five hundred eighteen thousand, five hundred thirty-seven".