8154227251 has 2 divisors, whose sum is σ = 8154227252. Its totient is φ = 8154227250.

The previous prime is 8154227233. The next prime is 8154227261. The reversal of 8154227251 is 1527224518.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8154227251 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 8154227251.

It is not a weakly prime, because it can be changed into another prime (8154227201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4077113625 + 4077113626.

It is an arithmetic number, because the mean of its divisors is an integer number (4077113626).

Almost surely, 2^8154227251 is an apocalyptic number.

8154227251 is a deficient number, since it is larger than the sum of its proper divisors (1).

8154227251 is an equidigital number, since it uses as much as digits as its factorization.

8154227251 is an evil number, because the sum of its binary digits is even.

The product of its digits is 44800, while the sum is 37.

The square root of 8154227251 is about 90300.7599691165. The cubic root of 8154227251 is about 2012.7705538347.

The spelling of 8154227251 in words is "eight billion, one hundred fifty-four million, two hundred twenty-seven thousand, two hundred fifty-one".