445023122 has 4 divisors (see below), whose sum is σ = 667534686. Its totient is φ = 222511560.

The previous prime is 445023097. The next prime is 445023133. The reversal of 445023122 is 221320544.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 428531401 + 16491721 = 20701^2 + 4061^2 .

It is a super-2 number, since 2×445023122² = 396091158229253768, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111255779 + ... + 111255782.

Almost surely, 2^445023122 is an apocalyptic number.

445023122 is a deficient number, since it is larger than the sum of its proper divisors (222511564).

445023122 is a wasteful number, since it uses less digits than its factorization.

445023122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222511563.

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 445023122 is about 21095.5711465701. The cubic root of 445023122 is about 763.4738949447.

Adding to 445023122 its reverse (221320544), we get a palindrome (666343666).

It can be divided in two parts, 4450 and 23122, that added together give a palindrome (27572).

The spelling of 445023122 in words is "four hundred forty-five million, twenty-three thousand, one hundred twenty-two".