52442251 has 4 divisors (see below), whose sum is σ = 53160712. Its totient is φ = 51723792.

The previous prime is 52442227. The next prime is 52442267. The reversal of 52442251 is 15224425.

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 52442251 - 2⁵ = 52442219 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52442651) 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, 359121 + ... + 359266.

It is an arithmetic number, because the mean of its divisors is an integer number (13290178).

Almost surely, 2^52442251 is an apocalyptic number.

52442251 is a deficient number, since it is larger than the sum of its proper divisors (718461).

52442251 is an equidigital number, since it uses as much as digits as its factorization.

52442251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 718460.

The product of its digits is 3200, while the sum is 25.

The square root of 52442251 is about 7241.7022170205. The cubic root of 52442251 is about 374.3062753737.

Adding to 52442251 its reverse (15224425), we get a palindrome (67666676).

The spelling of 52442251 in words is "fifty-two million, four hundred forty-two thousand, two hundred fifty-one".