53869591 has 2 divisors, whose sum is σ = 53869592. Its totient is φ = 53869590.

The previous prime is 53869553. The next prime is 53869601. The reversal of 53869591 is 19596835.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53869591 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53869511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26934795 + 26934796.

It is an arithmetic number, because the mean of its divisors is an integer number (26934796).

Almost surely, 2^53869591 is an apocalyptic number.

53869591 is a deficient number, since it is larger than the sum of its proper divisors (1).

53869591 is an equidigital number, since it uses as much as digits as its factorization.

53869591 is an evil number, because the sum of its binary digits is even.

The product of its digits is 291600, while the sum is 46.

The square root of 53869591 is about 7339.5906561606. The cubic root of 53869591 is about 377.6718011046.

The spelling of 53869591 in words is "fifty-three million, eight hundred sixty-nine thousand, five hundred ninety-one".