22152501 has 16 divisors (see below), whose sum is σ = 37507200. Its totient is φ = 12658464.

The previous prime is 22152467. The next prime is 22152509. The reversal of 22152501 is 10525122.

It is not a de Polignac number, because 22152501 - 2⁶ = 22152437 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22152509) 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, 58416 + ... + 58793.

It is an arithmetic number, because the mean of its divisors is an integer number (2344200).

Almost surely, 2^22152501 is an apocalyptic number.

22152501 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

22152501 is a deficient number, since it is larger than the sum of its proper divisors (15354699).

22152501 is a wasteful number, since it uses less digits than its factorization.

22152501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117225 (or 117219 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

The square root of 22152501 is about 4706.6443460283. The cubic root of 22152501 is about 280.8498879512.

Adding to 22152501 its reverse (10525122), we get a palindrome (32677623).

The spelling of 22152501 in words is "twenty-two million, one hundred fifty-two thousand, five hundred one".