71532427 has 2 divisors, whose sum is σ = 71532428. Its totient is φ = 71532426.

The previous prime is 71532403. The next prime is 71532431. The reversal of 71532427 is 72423517.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 71532427 - 2¹⁹ = 71008139 is a prime.

It is a super-2 number, since 2×71532427² = 10233776225020658, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (71532437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35766213 + 35766214.

It is an arithmetic number, because the mean of its divisors is an integer number (35766214).

Almost surely, 2^71532427 is an apocalyptic number.

71532427 is a deficient number, since it is larger than the sum of its proper divisors (1).

71532427 is an equidigital number, since it uses as much as digits as its factorization.

71532427 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11760, while the sum is 31.

The square root of 71532427 is about 8457.6844939972. The cubic root of 71532427 is about 415.1142608881.

The spelling of 71532427 in words is "seventy-one million, five hundred thirty-two thousand, four hundred twenty-seven".