52218291 has 16 divisors (see below), whose sum is σ = 72188928. Its totient is φ = 33540000.

The previous prime is 52218281. The next prime is 52218307. The reversal of 52218291 is 19281225.

It is not a de Polignac number, because 52218291 - 2⁶ = 52218227 is a prime.

It is not an unprimeable number, because it can be changed into a prime (52218281) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22225 + ... + 24461.

It is an arithmetic number, because the mean of its divisors is an integer number (4511808).

Almost surely, 2^52218291 is an apocalyptic number.

52218291 is a deficient number, since it is larger than the sum of its proper divisors (19970637).

52218291 is a wasteful number, since it uses less digits than its factorization.

52218291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2522.

The product of its digits is 2880, while the sum is 30.

The square root of 52218291 is about 7226.2224571348. Note that the first 3 decimals coincide. The cubic root of 52218291 is about 373.7726773040.

The spelling of 52218291 in words is "fifty-two million, two hundred eighteen thousand, two hundred ninety-one".