52255240 has 16 divisors (see below), whose sum is σ = 117574380. Its totient is φ = 20902080.

The previous prime is 52255213. The next prime is 52255249. The reversal of 52255240 is 4255225.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 52041796 + 213444 = 7214^2 + 462^2 .

It is a super-2 number, since 2×52255240² = 5461220214915200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (52255249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 653151 + ... + 653230.

Almost surely, 2^52255240 is an apocalyptic number.

It is an amenable number.

52255240 is an abundant number, since it is smaller than the sum of its proper divisors (65319140).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

52255240 is a wasteful number, since it uses less digits than its factorization.

52255240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1306392 (or 1306388 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 25.

The square root of 52255240 is about 7228.7785966925. The cubic root of 52255240 is about 373.8608154531.

The spelling of 52255240 in words is "fifty-two million, two hundred fifty-five thousand, two hundred forty".