57223513 has 4 divisors (see below), whose sum is σ = 60589620. Its totient is φ = 53857408.

The previous prime is 57223483. The next prime is 57223519. The reversal of 57223513 is 31532275.

57223513 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 24870169 + 32353344 = 4987^2 + 5688^2 .

It is a cyclic number.

It is not a de Polignac number, because 57223513 - 2²⁵ = 23669081 is a prime.

It is a super-2 number, since 2×57223513² = 6549060880122338, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57223519) 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 3 ways as a sum of consecutive naturals, for example, 1683028 + ... + 1683061.

It is an arithmetic number, because the mean of its divisors is an integer number (15147405).

Almost surely, 2^57223513 is an apocalyptic number.

It is an amenable number.

57223513 is a deficient number, since it is larger than the sum of its proper divisors (3366107).

57223513 is a wasteful number, since it uses less digits than its factorization.

57223513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3366106.

The product of its digits is 6300, while the sum is 28.

The square root of 57223513 is about 7564.6224624895. The cubic root of 57223513 is about 385.3524921496.

Adding to 57223513 its reverse (31532275), we get a palindrome (88755788).

The spelling of 57223513 in words is "fifty-seven million, two hundred twenty-three thousand, five hundred thirteen".