2045402253 has 16 divisors (see below), whose sum is σ = 3039393600. Its totient is φ = 1359475920.

The previous prime is 2045402239. The next prime is 2045402273. The reversal of 2045402253 is 3522045402.

It is a happy number.

2045402253 is a `hidden beast` number, since 2 + 0 + 4 + 5 + 402 + 253 = 666.

It is not a de Polignac number, because 2045402253 - 2⁸ = 2045401997 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2045402273) 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, 105498 + ... + 123371.

It is an arithmetic number, because the mean of its divisors is an integer number (189962100).

Almost surely, 2^2045402253 is an apocalyptic number.

It is an amenable number.

2045402253 is a deficient number, since it is larger than the sum of its proper divisors (993991347).

2045402253 is a wasteful number, since it uses less digits than its factorization.

2045402253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229209 (or 229203 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 27.

The square root of 2045402253 is about 45226.1235681326. The cubic root of 2045402253 is about 1269.3836786736.

Adding to 2045402253 its reverse (3522045402), we get a palindrome (5567447655).

The spelling of 2045402253 in words is "two billion, forty-five million, four hundred two thousand, two hundred fifty-three".