53613091 has 4 divisors (see below), whose sum is σ = 61272112. Its totient is φ = 45954072.

The previous prime is 53613071. The next prime is 53613097. The reversal of 53613091 is 19031635.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 53613091 - 2¹³ = 53604899 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53613097) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3829500 + ... + 3829513.

It is an arithmetic number, because the mean of its divisors is an integer number (15318028).

Almost surely, 2^53613091 is an apocalyptic number.

53613091 is a deficient number, since it is larger than the sum of its proper divisors (7659021).

53613091 is an equidigital number, since it uses as much as digits as its factorization.

53613091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7659020.

The product of its (nonzero) digits is 2430, while the sum is 28.

The square root of 53613091 is about 7322.0960796755. The cubic root of 53613091 is about 377.0714192289.

The spelling of 53613091 in words is "fifty-three million, six hundred thirteen thousand, ninety-one".