22142253 has 8 divisors (see below), whose sum is σ = 33740608. Its totient is φ = 12652704.

The previous prime is 22142231. The next prime is 22142257. The reversal of 22142253 is 35224122.

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

It is not a de Polignac number, because 22142253 - 2⁶ = 22142189 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 1054393 = 22142253 / (2 + 2 + 1 + 4 + 2 + 2 + 5 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22142257) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 527176 + ... + 527217.

It is an arithmetic number, because the mean of its divisors is an integer number (4217576).

Almost surely, 2^22142253 is an apocalyptic number.

It is an amenable number.

22142253 is a deficient number, since it is larger than the sum of its proper divisors (11598355).

22142253 is a wasteful number, since it uses less digits than its factorization.

22142253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1054403.

The product of its digits is 960, while the sum is 21.

The square root of 22142253 is about 4705.5555463728. Note that the first 4 decimals coincide. The cubic root of 22142253 is about 280.8065731491.

Adding to 22142253 its reverse (35224122), we get a palindrome (57366375).

The spelling of 22142253 in words is "twenty-two million, one hundred forty-two thousand, two hundred fifty-three".