53509091 has 2 divisors, whose sum is σ = 53509092. Its totient is φ = 53509090.

The previous prime is 53509087. The next prime is 53509097. The reversal of 53509091 is 19090535.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 53509091 - 2² = 53509087 is a prime.

It is not a weakly prime, because it can be changed into another prime (53509097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26754545 + 26754546.

It is an arithmetic number, because the mean of its divisors is an integer number (26754546).

Almost surely, 2^53509091 is an apocalyptic number.

53509091 is a deficient number, since it is larger than the sum of its proper divisors (1).

53509091 is an equidigital number, since it uses as much as digits as its factorization.

53509091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6075, while the sum is 32.

The square root of 53509091 is about 7314.9908407325. The cubic root of 53509091 is about 376.8274439158.

It can be divided in two parts, 5350 and 9091, that added together give a palindrome (14441).

The spelling of 53509091 in words is "fifty-three million, five hundred nine thousand, ninety-one".