2251756567 has 2 divisors, whose sum is σ = 2251756568. Its totient is φ = 2251756566.

The previous prime is 2251756547. The next prime is 2251756589. The reversal of 2251756567 is 7656571522.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2251756567 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2251756547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1125878283 + 1125878284.

It is an arithmetic number, because the mean of its divisors is an integer number (1125878284).

Almost surely, 2^2251756567 is an apocalyptic number.

2251756567 is a deficient number, since it is larger than the sum of its proper divisors (1).

2251756567 is an equidigital number, since it uses as much as digits as its factorization.

2251756567 is an evil number, because the sum of its binary digits is even.

The product of its digits is 882000, while the sum is 46.

The square root of 2251756567 is about 47452.6771320650. The cubic root of 2251756567 is about 1310.7116089850.

The spelling of 2251756567 in words is "two billion, two hundred fifty-one million, seven hundred fifty-six thousand, five hundred sixty-seven".