22315557 has 16 divisors (see below), whose sum is σ = 34168320. Its totient is φ = 12812400.

The previous prime is 22315549. The next prime is 22315637. The reversal of 22315557 is 75551322.

It is not a de Polignac number, because 22315557 - 2³ = 22315549 is a prime.

It is a super-3 number, since 3×22315557³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22315507) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17169 + ... + 18422.

It is an arithmetic number, because the mean of its divisors is an integer number (2135520).

Almost surely, 2^22315557 is an apocalyptic number.

It is an amenable number.

22315557 is a deficient number, since it is larger than the sum of its proper divisors (11852763).

22315557 is a wasteful number, since it uses less digits than its factorization.

22315557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35624.

The product of its digits is 10500, while the sum is 30.

The square root of 22315557 is about 4723.9344830342. The cubic root of 22315557 is about 281.5372799917.

Adding to 22315557 its reverse (75551322), we get a palindrome (97866879).

The spelling of 22315557 in words is "twenty-two million, three hundred fifteen thousand, five hundred fifty-seven".