2253019561 has 4 divisors (see below), whose sum is σ = 2426328772. Its totient is φ = 2079710352.

The previous prime is 2253019547. The next prime is 2253019583. The reversal of 2253019561 is 1659103522.

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 231617961 + 2021401600 = 15219^2 + 44960^2 .

It is a cyclic number.

It is not a de Polignac number, because 2253019561 - 2²¹ = 2250922409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2253019501) 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, 86654586 + ... + 86654611.

It is an arithmetic number, because the mean of its divisors is an integer number (606582193).

Almost surely, 2^2253019561 is an apocalyptic number.

It is an amenable number.

2253019561 is a deficient number, since it is larger than the sum of its proper divisors (173309211).

2253019561 is a wasteful number, since it uses less digits than its factorization.

2253019561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173309210.

The product of its (nonzero) digits is 16200, while the sum is 34.

The square root of 2253019561 is about 47465.9831984970. The cubic root of 2253019561 is about 1310.9566194084.

The spelling of 2253019561 in words is "two billion, two hundred fifty-three million, nineteen thousand, five hundred sixty-one".