22445457 has 16 divisors (see below), whose sum is σ = 32712192. Its totient is φ = 13628160.

The previous prime is 22445431. The next prime is 22445459. The reversal of 22445457 is 75454422.

It is not a de Polignac number, because 22445457 - 2¹¹ = 22443409 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22445459) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5518 + ... + 8679.

It is an arithmetic number, because the mean of its divisors is an integer number (2044512).

Almost surely, 2^22445457 is an apocalyptic number.

It is an amenable number.

22445457 is a deficient number, since it is larger than the sum of its proper divisors (10266735).

22445457 is a wasteful number, since it uses less digits than its factorization.

22445457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14248.

The product of its digits is 44800, while the sum is 33.

The square root of 22445457 is about 4737.6636647191. The cubic root of 22445457 is about 282.0825044043.

Adding to 22445457 its reverse (75454422), we get a palindrome (97899879).

The spelling of 22445457 in words is "twenty-two million, four hundred forty-five thousand, four hundred fifty-seven".