52266440 has 16 divisors (see below), whose sum is σ = 117599580. Its totient is φ = 20906560.

The previous prime is 52266367. The next prime is 52266493. The reversal of 52266440 is 4466225.

It can be written as a sum of positive squares in 2 ways, for example, as 51294244 + 972196 = 7162^2 + 986^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 653291 + ... + 653370.

Almost surely, 2^52266440 is an apocalyptic number.

It is an amenable number.

52266440 is an abundant number, since it is smaller than the sum of its proper divisors (65333140).

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

52266440 is a wasteful number, since it uses less digits than its factorization.

52266440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1306672 (or 1306668 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 29.

The square root of 52266440 is about 7229.5532365424. The cubic root of 52266440 is about 373.8875237284.

The spelling of 52266440 in words is "fifty-two million, two hundred sixty-six thousand, four hundred forty".