22312057 has 6 divisors (see below), whose sum is σ = 22462538. Its totient is φ = 22162464.

The previous prime is 22312019. The next prime is 22312063. The reversal of 22312057 is 75021322.

It can be written as a sum of positive squares in only one way, i.e., 14891881 + 7420176 = 3859^2 + 2724^2 .

It is a de Polignac number, because none of the positive numbers 2^k-22312057 is a prime.

It is a super-3 number, since 3×22312057³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22312067) 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, 51313 + ... + 51745.

Almost surely, 2^22312057 is an apocalyptic number.

It is an amenable number.

22312057 is a deficient number, since it is larger than the sum of its proper divisors (150481).

22312057 is an frugal number, since it uses more digits than its factorization.

22312057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 887 (or 660 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 22312057 is about 4723.5640145975. The cubic root of 22312057 is about 281.5225603352.

Adding to 22312057 its reverse (75021322), we get a palindrome (97333379).

The spelling of 22312057 in words is "twenty-two million, three hundred twelve thousand, fifty-seven".