222151854 has 8 divisors (see below), whose sum is σ = 444303720. Its totient is φ = 74050616.

The previous prime is 222151849. The next prime is 222151877. The reversal of 222151854 is 458151222.

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

222151854 is an admirable 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, 18512649 + ... + 18512660.

It is an arithmetic number, because the mean of its divisors is an integer number (55537965).

Almost surely, 2^222151854 is an apocalyptic number.

222151854 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.

222151854 is a wasteful number, since it uses less digits than its factorization.

222151854 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37025314.

The product of its digits is 6400, while the sum is 30.

The square root of 222151854 is about 14904.7594411986. The cubic root of 222151854 is about 605.6429237550.

It can be divided in two parts, 222 and 151854, that added together give a triangular number (152076 = T₅₅₁).

The spelling of 222151854 in words is "two hundred twenty-two million, one hundred fifty-one thousand, eight hundred fifty-four".