71530903 has 2 divisors, whose sum is σ = 71530904. Its totient is φ = 71530902.

The previous prime is 71530889. The next prime is 71530913. The reversal of 71530903 is 30903517.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 71530903 - 2⁵ = 71530871 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71530913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35765451 + 35765452.

It is an arithmetic number, because the mean of its divisors is an integer number (35765452).

Almost surely, 2^71530903 is an apocalyptic number.

71530903 is a deficient number, since it is larger than the sum of its proper divisors (1).

71530903 is an equidigital number, since it uses as much as digits as its factorization.

71530903 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2835, while the sum is 28.

The square root of 71530903 is about 8457.5943979361. The cubic root of 71530903 is about 415.1113128609. Note that the first 3 decimals are identical.

The spelling of 71530903 in words is "seventy-one million, five hundred thirty thousand, nine hundred three".