222631445 has 8 divisors (see below), whose sum is σ = 267318744. Its totient is φ = 177997824.

The previous prime is 222631399. The next prime is 222631457. The reversal of 222631445 is 544136222.

It can be written as a sum of positive squares in 4 ways, for example, as 7187761 + 215443684 = 2681^2 + 14678^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 222631445 - 2¹⁶ = 222565909 is a prime.

It is a super-3 number, since 3×222631445³ (a number of 26 digits) contains 333 as substring.

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 7 ways as a sum of consecutive naturals, for example, 3644 + ... + 21413.

It is an arithmetic number, because the mean of its divisors is an integer number (33414843).

Almost surely, 2^222631445 is an apocalyptic number.

It is an amenable number.

222631445 is a deficient number, since it is larger than the sum of its proper divisors (44687299).

222631445 is a wasteful number, since it uses less digits than its factorization.

222631445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26839.

The product of its digits is 11520, while the sum is 29.

The square root of 222631445 is about 14920.8392860455. The cubic root of 222631445 is about 606.0784398531.

Adding to 222631445 its reverse (544136222), we get a palindrome (766767667).

The spelling of 222631445 in words is "two hundred twenty-two million, six hundred thirty-one thousand, four hundred forty-five".