53436239 has 2 divisors, whose sum is σ = 53436240. Its totient is φ = 53436238.

The previous prime is 53436221. The next prime is 53436247. The reversal of 53436239 is 93263435.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 53436239 - 2⁸ = 53435983 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 53436199 and 53436208.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53436739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26718119 + 26718120.

It is an arithmetic number, because the mean of its divisors is an integer number (26718120).

Almost surely, 2^53436239 is an apocalyptic number.

53436239 is a deficient number, since it is larger than the sum of its proper divisors (1).

53436239 is an equidigital number, since it uses as much as digits as its factorization.

53436239 is an evil number, because the sum of its binary digits is even.

The product of its digits is 58320, while the sum is 35.

The square root of 53436239 is about 7310.0095075178. The cubic root of 53436239 is about 376.6563508631.

The spelling of 53436239 in words is "fifty-three million, four hundred thirty-six thousand, two hundred thirty-nine".