22557494 has 8 divisors (see below), whose sum is σ = 34750848. Its totient is φ = 10973880.

The previous prime is 22557473. The next prime is 22557497. The reversal of 22557494 is 49475522.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22557497) 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, 152342 + ... + 152489.

It is an arithmetic number, because the mean of its divisors is an integer number (4343856).

Almost surely, 2^22557494 is an apocalyptic number.

22557494 is a deficient number, since it is larger than the sum of its proper divisors (12193354).

22557494 is a wasteful number, since it uses less digits than its factorization.

22557494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304870.

The product of its digits is 100800, while the sum is 38.

The square root of 22557494 is about 4749.4730233995. The cubic root of 22557494 is about 282.5510660289.

The spelling of 22557494 in words is "twenty-two million, five hundred fifty-seven thousand, four hundred ninety-four".