52226440 has 64 divisors (see below), whose sum is σ = 141379200. Its totient is φ = 16962048.

The previous prime is 52226423. The next prime is 52226443. The reversal of 52226440 is 4462225.

It is not an unprimeable number, because it can be changed into a prime (52226443) 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, 412 + ... + 10228.

It is an arithmetic number, because the mean of its divisors is an integer number (2209050).

Almost surely, 2^52226440 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 52226440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70689600).

52226440 is an abundant number, since it is smaller than the sum of its proper divisors (89152760).

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

52226440 is a wasteful number, since it uses less digits than its factorization.

52226440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9854 (or 9850 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 52226440 is about 7226.7862843729. The cubic root of 52226440 is about 373.7921195024.

Adding to 52226440 its reverse (4462225), we get a palindrome (56688665).

It can be divided in two parts, 522 and 26440, that added together give a palindrome (26962).

The spelling of 52226440 in words is "fifty-two million, two hundred twenty-six thousand, four hundred forty".