791281251 has 8 divisors (see below), whose sum is σ = 1172268560. Its totient is φ = 527520816.

The previous prime is 791281241. The next prime is 791281261. The reversal of 791281251 is 152182197.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (791281241) and next prime (791281261).

It is not a de Polignac number, because 791281251 - 2⁶ = 791281187 is a prime.

It is a super-2 number, since 2×791281251² = 1252252036368250002, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (791281241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14653330 + ... + 14653383.

It is an arithmetic number, because the mean of its divisors is an integer number (146533570).

Almost surely, 2^791281251 is an apocalyptic number.

791281251 is a deficient number, since it is larger than the sum of its proper divisors (380987309).

791281251 is a wasteful number, since it uses less digits than its factorization.

791281251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29306722 (or 29306716 counting only the distinct ones).

The product of its digits is 10080, while the sum is 36.

The square root of 791281251 is about 28129.7218436301. The cubic root of 791281251 is about 924.9330366913.

The spelling of 791281251 in words is "seven hundred ninety-one million, two hundred eighty-one thousand, two hundred fifty-one".