5645903253 has 4 divisors (see below), whose sum is σ = 7527871008. Its totient is φ = 3763935500.

The previous prime is 5645903243. The next prime is 5645903279. The reversal of 5645903253 is 3523095465.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 5645903253 - 2²¹ = 5643806101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5645903203) 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, 940983873 + ... + 940983878.

It is an arithmetic number, because the mean of its divisors is an integer number (1881967752).

Almost surely, 2^5645903253 is an apocalyptic number.

It is an amenable number.

5645903253 is a deficient number, since it is larger than the sum of its proper divisors (1881967755).

5645903253 is a wasteful number, since it uses less digits than its factorization.

5645903253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1881967754.

The product of its (nonzero) digits is 486000, while the sum is 42.

The square root of 5645903253 is about 75139.2257945209. The cubic root of 5645903253 is about 1780.6469109511.

The spelling of 5645903253 in words is "five billion, six hundred forty-five million, nine hundred three thousand, two hundred fifty-three".