22222455 has 8 divisors (see below), whose sum is σ = 35555952. Its totient is φ = 11851968.

The previous prime is 22222433. The next prime is 22222471. The reversal of 22222455 is 55422222.

It is a happy number.

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

It is not a de Polignac number, because 22222455 - 2⁶ = 22222391 is a prime.

It is a plaindrome in base 10.

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, 740734 + ... + 740763.

It is an arithmetic number, because the mean of its divisors is an integer number (4444494).

Almost surely, 2^22222455 is an apocalyptic number.

22222455 is a deficient number, since it is larger than the sum of its proper divisors (13333497).

22222455 is a wasteful number, since it uses less digits than its factorization.

22222455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1481505.

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

The square root of 22222455 is about 4714.0698976574. The cubic root of 22222455 is about 281.1452034257.

Adding to 22222455 its reverse (55422222), we get a palindrome (77644677).

The spelling of 22222455 in words is "twenty-two million, two hundred twenty-two thousand, four hundred fifty-five".