222561446 has 4 divisors (see below), whose sum is σ = 333842172. Its totient is φ = 111280722.

The previous prime is 222561397. The next prime is 222561461. The reversal of 222561446 is 644165222.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 644165222 = 2 ⋅322082611.

It is a super-2 number, since 2×222561446² = 99067194491221832, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55640360 + ... + 55640363.

It is an arithmetic number, because the mean of its divisors is an integer number (83460543).

Almost surely, 2^222561446 is an apocalyptic number.

222561446 is a deficient number, since it is larger than the sum of its proper divisors (111280726).

222561446 is a wasteful number, since it uses less digits than its factorization.

222561446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111280725.

The product of its digits is 23040, while the sum is 32.

The square root of 222561446 is about 14918.4934225947. The cubic root of 222561446 is about 606.0149128405.

The spelling of 222561446 in words is "two hundred twenty-two million, five hundred sixty-one thousand, four hundred forty-six".