22157757 has 6 divisors (see below), whose sum is σ = 32005662. Its totient is φ = 14771832.

The previous prime is 22157741. The next prime is 22157767. The reversal of 22157757 is 75775122.

It can be written as a sum of positive squares in only one way, i.e., 17189316 + 4968441 = 4146^2 + 2229^2 .

It is not a de Polignac number, because 22157757 - 2⁴ = 22157741 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22157767) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1230978 + ... + 1230995.

It is an arithmetic number, because the mean of its divisors is an integer number (5334277).

Almost surely, 2^22157757 is an apocalyptic number.

It is an amenable number.

22157757 is a deficient number, since it is larger than the sum of its proper divisors (9847905).

22157757 is a wasteful number, since it uses less digits than its factorization.

22157757 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2461979 (or 2461976 counting only the distinct ones).

The product of its digits is 34300, while the sum is 36.

The square root of 22157757 is about 4707.2026725009. The cubic root of 22157757 is about 280.8720980887.

The spelling of 22157757 in words is "twenty-two million, one hundred fifty-seven thousand, seven hundred fifty-seven".