52400222 has 16 divisors (see below), whose sum is σ = 95113440. Its totient is φ = 21136128.

The previous prime is 52400219. The next prime is 52400267. The reversal of 52400222 is 22200425.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a self number, because there is not a number n which added to its sum of digits gives 52400222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 109847 + ... + 110322.

It is an arithmetic number, because the mean of its divisors is an integer number (5944590).

Almost surely, 2^52400222 is an apocalyptic number.

52400222 is a deficient number, since it is larger than the sum of its proper divisors (42713218).

52400222 is a wasteful number, since it uses less digits than its factorization.

52400222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220195.

The product of its (nonzero) digits is 320, while the sum is 17.

The square root of 52400222 is about 7238.7997623916. The cubic root of 52400222 is about 374.2062547309.

Adding to 52400222 its reverse (22200425), we get a palindrome (74600647).

The spelling of 52400222 in words is "fifty-two million, four hundred thousand, two hundred twenty-two".