222749855 has 4 divisors (see below), whose sum is σ = 267299832. Its totient is φ = 178199880.

The previous prime is 222749809. The next prime is 222749869. The reversal of 222749855 is 558947222.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 222749855 - 2¹⁰ = 222748831 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22274981 + ... + 22274990.

It is an arithmetic number, because the mean of its divisors is an integer number (66824958).

Almost surely, 2^222749855 is an apocalyptic number.

222749855 is a deficient number, since it is larger than the sum of its proper divisors (44549977).

222749855 is an equidigital number, since it uses as much as digits as its factorization.

222749855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44549976.

The product of its digits is 403200, while the sum is 44.

The square root of 222749855 is about 14924.8066989157. The cubic root of 222749855 is about 606.1858715602.

The spelling of 222749855 in words is "two hundred twenty-two million, seven hundred forty-nine thousand, eight hundred fifty-five".