53499739 has 2 divisors, whose sum is σ = 53499740. Its totient is φ = 53499738.

The previous prime is 53499713. The next prime is 53499841. The reversal of 53499739 is 93799435.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53499739 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 53499692 and 53499701.

It is not a weakly prime, because it can be changed into another prime (53490739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26749869 + 26749870.

It is an arithmetic number, because the mean of its divisors is an integer number (26749870).

Almost surely, 2^53499739 is an apocalyptic number.

53499739 is a deficient number, since it is larger than the sum of its proper divisors (1).

53499739 is an equidigital number, since it uses as much as digits as its factorization.

53499739 is an evil number, because the sum of its binary digits is even.

The product of its digits is 918540, while the sum is 49.

The square root of 53499739 is about 7314.3515775494. The cubic root of 53499739 is about 376.8054894185.

The spelling of 53499739 in words is "fifty-three million, four hundred ninety-nine thousand, seven hundred thirty-nine".