53340091 has 4 divisors (see below), whose sum is σ = 60960112. Its totient is φ = 45720072.

The previous prime is 53340083. The next prime is 53340143. The reversal of 53340091 is 19004335.

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 53340091 - 2³ = 53340083 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53340041) 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, 3810000 + ... + 3810013.

It is an arithmetic number, because the mean of its divisors is an integer number (15240028).

Almost surely, 2^53340091 is an apocalyptic number.

53340091 is a deficient number, since it is larger than the sum of its proper divisors (7620021).

53340091 is an equidigital number, since it uses as much as digits as its factorization.

53340091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7620020.

The product of its (nonzero) digits is 1620, while the sum is 25.

The square root of 53340091 is about 7303.4300845562. The cubic root of 53340091 is about 376.4303089005.

The spelling of 53340091 in words is "fifty-three million, three hundred forty thousand, ninety-one".