522222000 has 80 divisors (see below), whose sum is σ = 1683663072. Its totient is φ = 139257600.

The previous prime is 522221993. The next prime is 522222017. The reversal of 522222000 is 222225.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a nialpdrome in base 10.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37519 + ... + 49518.

Almost surely, 2^522222000 is an apocalyptic number.

522222000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

522222000 is an abundant number, since it is smaller than the sum of its proper divisors (1161441072).

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

522222000 is a wasteful number, since it uses less digits than its factorization.

522222000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87063 (or 87047 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 15.

The square root of 522222000 is about 22852.1771391699. The cubic root of 522222000 is about 805.2889154948.

Adding to 522222000 its reverse (222225), we get a palindrome (522444225).

The spelling of 522222000 in words is "five hundred twenty-two million, two hundred twenty-two thousand".