53439091 has 2 divisors, whose sum is σ = 53439092. Its totient is φ = 53439090.

The previous prime is 53439079. The next prime is 53439107. The reversal of 53439091 is 19093435.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 53439091 - 2⁵ = 53439059 is a prime.

It is not a weakly prime, because it can be changed into another prime (53439791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26719545 + 26719546.

It is an arithmetic number, because the mean of its divisors is an integer number (26719546).

Almost surely, 2^53439091 is an apocalyptic number.

53439091 is a deficient number, since it is larger than the sum of its proper divisors (1).

53439091 is an equidigital number, since it uses as much as digits as its factorization.

53439091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14580, while the sum is 34.

The square root of 53439091 is about 7310.2045799006. The cubic root of 53439091 is about 376.6630517139.

The spelling of 53439091 in words is "fifty-three million, four hundred thirty-nine thousand, ninety-one".