22245157 has 8 divisors (see below), whose sum is σ = 24314400. Its totient is φ = 20183760.

The previous prime is 22245151. The next prime is 22245161. The reversal of 22245157 is 75154222.

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 22245157 - 2¹⁵ = 22212389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22245151) 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, 5094 + ... + 8392.

It is an arithmetic number, because the mean of its divisors is an integer number (3039300).

Almost surely, 2^22245157 is an apocalyptic number.

It is an amenable number.

22245157 is a deficient number, since it is larger than the sum of its proper divisors (2069243).

22245157 is a wasteful number, since it uses less digits than its factorization.

22245157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3923.

The product of its digits is 5600, while the sum is 28.

The square root of 22245157 is about 4716.4771811173. The cubic root of 22245157 is about 281.2409082164.

Adding to 22245157 its reverse (75154222), we get a palindrome (97399379).

It can be divided in two parts, 2224 and 5157, that added together give a triangular number (7381 = T₁₂₁).

The spelling of 22245157 in words is "twenty-two million, two hundred forty-five thousand, one hundred fifty-seven".