52909091 has 4 divisors (see below), whose sum is σ = 55693800. Its totient is φ = 50124384.

The previous prime is 52909081. The next prime is 52909093. The reversal of 52909091 is 19090925.

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 52909091 - 2⁶ = 52909027 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52909093) 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, 1392326 + ... + 1392363.

It is an arithmetic number, because the mean of its divisors is an integer number (13923450).

Almost surely, 2^52909091 is an apocalyptic number.

52909091 is a deficient number, since it is larger than the sum of its proper divisors (2784709).

52909091 is a wasteful number, since it uses less digits than its factorization.

52909091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2784708.

The product of its (nonzero) digits is 7290, while the sum is 35.

The square root of 52909091 is about 7273.8635538481. The cubic root of 52909091 is about 375.4136851008.

The spelling of 52909091 in words is "fifty-two million, nine hundred nine thousand, ninety-one".