2251543745 has 16 divisors (see below), whose sum is σ = 2987857152. Its totient is φ = 1615052160.

The previous prime is 2251543711. The next prime is 2251543787. The reversal of 2251543745 is 5473451522.

It is not a de Polignac number, because 2251543745 - 2¹⁰ = 2251542721 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2251543699 and 2251543708.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 276377 + ... + 284406.

It is an arithmetic number, because the mean of its divisors is an integer number (186741072).

Almost surely, 2^2251543745 is an apocalyptic number.

It is an amenable number.

2251543745 is a deficient number, since it is larger than the sum of its proper divisors (736313407).

2251543745 is a wasteful number, since it uses less digits than its factorization.

2251543745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 560872.

The product of its digits is 168000, while the sum is 38.

The square root of 2251543745 is about 47450.4346133942. The cubic root of 2251543745 is about 1310.6703142526.

The spelling of 2251543745 in words is "two billion, two hundred fifty-one million, five hundred forty-three thousand, seven hundred forty-five".