71485903 has 2 divisors, whose sum is σ = 71485904. Its totient is φ = 71485902.

The previous prime is 71485891. The next prime is 71485913. The reversal of 71485903 is 30958417.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71485903 is a prime.

It is a super-2 number, since 2×71485903² = 10220468655450818, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71485913) 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, 35742951 + 35742952.

It is an arithmetic number, because the mean of its divisors is an integer number (35742952).

Almost surely, 2^71485903 is an apocalyptic number.

71485903 is a deficient number, since it is larger than the sum of its proper divisors (1).

71485903 is an equidigital number, since it uses as much as digits as its factorization.

71485903 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 71485903 is about 8454.9336484682. The cubic root of 71485903 is about 415.0242459343.

The spelling of 71485903 in words is "seventy-one million, four hundred eighty-five thousand, nine hundred three".