65052091 has 4 divisors (see below), whose sum is σ = 70056112. Its totient is φ = 60048072.

The previous prime is 65052083. The next prime is 65052131. The reversal of 65052091 is 19025056.

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 65052091 - 2³ = 65052083 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65052391) 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, 2501991 + ... + 2502016.

It is an arithmetic number, because the mean of its divisors is an integer number (17514028).

Almost surely, 2^65052091 is an apocalyptic number.

65052091 is a deficient number, since it is larger than the sum of its proper divisors (5004021).

65052091 is a wasteful number, since it uses less digits than its factorization.

65052091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5004020.

The product of its (nonzero) digits is 2700, while the sum is 28.

The square root of 65052091 is about 8065.4876479975. The cubic root of 65052091 is about 402.1799541671.

The spelling of 65052091 in words is "sixty-five million, fifty-two thousand, ninety-one".