992159251 has 2 divisors, whose sum is σ = 992159252. Its totient is φ = 992159250.

The previous prime is 992159239. The next prime is 992159261. The reversal of 992159251 is 152951299.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 992159251 - 2¹¹ = 992157203 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 992159198 and 992159207.

It is not a weakly prime, because it can be changed into another prime (992159261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 496079625 + 496079626.

It is an arithmetic number, because the mean of its divisors is an integer number (496079626).

Almost surely, 2^992159251 is an apocalyptic number.

992159251 is a deficient number, since it is larger than the sum of its proper divisors (1).

992159251 is an equidigital number, since it uses as much as digits as its factorization.

992159251 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72900, while the sum is 43.

The square root of 992159251 is about 31498.5595067457. The cubic root of 992159251 is about 997.3795562726.

The spelling of 992159251 in words is "nine hundred ninety-two million, one hundred fifty-nine thousand, two hundred fifty-one".