2122453544 has 8 divisors (see below), whose sum is σ = 3979600410. Its totient is φ = 1061226768.

The previous prime is 2122453517. The next prime is 2122453549. The reversal of 2122453544 is 4453542212.

It can be written as a sum of positive squares in only one way, i.e., 2042136100 + 80317444 = 45190^2 + 8962^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 2122453544.

It is not an unprimeable number, because it can be changed into a prime (2122453549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132653339 + ... + 132653354.

Almost surely, 2^2122453544 is an apocalyptic number.

It is an amenable number.

2122453544 is a deficient number, since it is larger than the sum of its proper divisors (1857146866).

2122453544 is a wasteful number, since it uses less digits than its factorization.

2122453544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265306699 (or 265306695 counting only the distinct ones).

The product of its digits is 38400, while the sum is 32.

The square root of 2122453544 is about 46070.0938136661. The cubic root of 2122453544 is about 1285.1270484586.

Adding to 2122453544 its reverse (4453542212), we get a palindrome (6575995756).

The spelling of 2122453544 in words is "two billion, one hundred twenty-two million, four hundred fifty-three thousand, five hundred forty-four".