222400554 has 8 divisors (see below), whose sum is σ = 444801120. Its totient is φ = 74133516.

The previous prime is 222400553. The next prime is 222400583. The reversal of 222400554 is 455004222.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

222400554 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (222400553) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18533374 + ... + 18533385.

It is an arithmetic number, because the mean of its divisors is an integer number (55600140).

Almost surely, 2^222400554 is an apocalyptic number.

222400554 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

222400554 is a wasteful number, since it uses less digits than its factorization.

222400554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37066764.

The product of its (nonzero) digits is 3200, while the sum is 24.

The square root of 222400554 is about 14913.1000801309. The cubic root of 222400554 is about 605.8688461282.

Adding to 222400554 its reverse (455004222), we get a palindrome (677404776).

It can be divided in two parts, 222 and 400554, that multiplied together give a palindrome (88922988).

The spelling of 222400554 in words is "two hundred twenty-two million, four hundred thousand, five hundred fifty-four".