22743557 has 4 divisors (see below), whose sum is σ = 22758060. Its totient is φ = 22729056.

The previous prime is 22743529. The next prime is 22743559. The reversal of 22743557 is 75534722.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 75534722 = 2 ⋅37767361.

It can be written as a sum of positive squares in 2 ways, for example, as 21520321 + 1223236 = 4639^2 + 1106^2 .

It is a cyclic number.

It is not a de Polignac number, because 22743557 - 2²⁴ = 5966341 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22743559) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4568 + ... + 8145.

It is an arithmetic number, because the mean of its divisors is an integer number (5689515).

Almost surely, 2^22743557 is an apocalyptic number.

It is an amenable number.

22743557 is a deficient number, since it is larger than the sum of its proper divisors (14503).

22743557 is a wasteful number, since it uses less digits than its factorization.

22743557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14502.

The product of its digits is 58800, while the sum is 35.

The square root of 22743557 is about 4769.0205493371. The cubic root of 22743557 is about 283.3258035677.

The spelling of 22743557 in words is "twenty-two million, seven hundred forty-three thousand, five hundred fifty-seven".