2251100945 has 8 divisors (see below), whose sum is σ = 2711364840. Its totient is φ = 1794184960.

The previous prime is 2251100933. The next prime is 2251100953. The reversal of 2251100945 is 5490011522.

It can be written as a sum of positive squares in 4 ways, for example, as 34480384 + 2216620561 = 5872^2 + 47081^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-2251100945 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 835496 + ... + 838185.

It is an arithmetic number, because the mean of its divisors is an integer number (338920605).

Almost surely, 2^2251100945 is an apocalyptic number.

It is an amenable number.

2251100945 is a deficient number, since it is larger than the sum of its proper divisors (460263895).

2251100945 is a wasteful number, since it uses less digits than its factorization.

2251100945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1673955.

The product of its (nonzero) digits is 3600, while the sum is 29.

The square root of 2251100945 is about 47445.7684625299. The cubic root of 2251100945 is about 1310.5843875980.

The spelling of 2251100945 in words is "two billion, two hundred fifty-one million, one hundred thousand, nine hundred forty-five".