2213456557 has 4 divisors (see below), whose sum is σ = 2383722460. Its totient is φ = 2043190656.

The previous prime is 2213456549. The next prime is 2213456563. The reversal of 2213456557 is 7556543122.

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 1103967076 + 1109489481 = 33226^2 + 33309^2 .

It is not a de Polignac number, because 2213456557 - 2³ = 2213456549 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 (2213456257) 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, 85132932 + ... + 85132957.

It is an arithmetic number, because the mean of its divisors is an integer number (595930615).

Almost surely, 2^2213456557 is an apocalyptic number.

It is an amenable number.

2213456557 is a deficient number, since it is larger than the sum of its proper divisors (170265903).

2213456557 is a wasteful number, since it uses less digits than its factorization.

2213456557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170265902.

The product of its digits is 252000, while the sum is 40.

The square root of 2213456557 is about 47047.3862929706. The cubic root of 2213456557 is about 1303.2377984292.

Adding to 2213456557 its reverse (7556543122), we get a palindrome (9769999679).

The spelling of 2213456557 in words is "two billion, two hundred thirteen million, four hundred fifty-six thousand, five hundred fifty-seven".