22520157 has 12 divisors (see below), whose sum is σ = 33005280. Its totient is φ = 13648360.

The previous prime is 22520143. The next prime is 22520203. The reversal of 22520157 is 75102522.

It is not a de Polignac number, because 22520157 - 2¹⁴ = 22503773 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22520137) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30657 + ... + 31382.

It is an arithmetic number, because the mean of its divisors is an integer number (2750440).

Almost surely, 2^22520157 is an apocalyptic number.

It is an amenable number.

22520157 is a deficient number, since it is larger than the sum of its proper divisors (10485123).

22520157 is a wasteful number, since it uses less digits than its factorization.

22520157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62064 (or 62053 counting only the distinct ones).

The product of its (nonzero) digits is 1400, while the sum is 24.

The square root of 22520157 is about 4745.5407489558. The cubic root of 22520157 is about 282.3950877827.

Adding to 22520157 its reverse (75102522), we get a palindrome (97622679).

The spelling of 22520157 in words is "twenty-two million, five hundred twenty thousand, one hundred fifty-seven".