7972231 has 2 divisors, whose sum is σ = 7972232. Its totient is φ = 7972230.

The previous prime is 7972219. The next prime is 7972253. The reversal of 7972231 is 1322797.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 7972231 - 2⁵ = 7972199 is a prime.

It is a super-2 number, since 2×7972231² = 127112934234722, which contains 22 as substring.

It is a nialpdrome in base 15.

It is a junction number, because it is equal to n+sod(n) for n = 7972193 and 7972202.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7972271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3986115 + 3986116.

It is an arithmetic number, because the mean of its divisors is an integer number (3986116).

Almost surely, 2^7972231 is an apocalyptic number.

7972231 is a deficient number, since it is larger than the sum of its proper divisors (1).

7972231 is an equidigital number, since it uses as much as digits as its factorization.

7972231 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5292, while the sum is 31.

The square root of 7972231 is about 2823.5139454233. The cubic root of 7972231 is about 199.7683234001.

The spelling of 7972231 in words is "seven million, nine hundred seventy-two thousand, two hundred thirty-one".