2553345021 has 16 divisors (see below), whose sum is σ = 3418841088. Its totient is φ = 1695054000.

The previous prime is 2553344993. The next prime is 2553345037. The reversal of 2553345021 is 1205433552.

It is not a de Polignac number, because 2553345021 - 2¹⁰ = 2553343997 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2553345021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2553345061) 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, 1197126 + ... + 1199256.

It is an arithmetic number, because the mean of its divisors is an integer number (213677568).

Almost surely, 2^2553345021 is an apocalyptic number.

It is an amenable number.

2553345021 is a deficient number, since it is larger than the sum of its proper divisors (865496067).

2553345021 is a wasteful number, since it uses less digits than its factorization.

2553345021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3632.

The product of its (nonzero) digits is 18000, while the sum is 30.

The square root of 2553345021 is about 50530.6344804812. The cubic root of 2553345021 is about 1366.7943272050.

Adding to 2553345021 its reverse (1205433552), we get a palindrome (3758778573).

The spelling of 2553345021 in words is "two billion, five hundred fifty-three million, three hundred forty-five thousand, twenty-one".