71513235 has 12 divisors (see below), whose sum is σ = 123956352. Its totient is φ = 38140368.

The previous prime is 71513231. The next prime is 71513243. The reversal of 71513235 is 53231517.

It is not a de Polignac number, because 71513235 - 2² = 71513231 is a prime.

It is a super-2 number, since 2×71513235² = 10228285560330450, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 71513199 and 71513208.

It is not an unprimeable number, because it can be changed into a prime (71513231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 794547 + ... + 794636.

It is an arithmetic number, because the mean of its divisors is an integer number (10329696).

Almost surely, 2^71513235 is an apocalyptic number.

71513235 is a deficient number, since it is larger than the sum of its proper divisors (52443117).

71513235 is a wasteful number, since it uses less digits than its factorization.

71513235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1589194 (or 1589191 counting only the distinct ones).

The product of its digits is 3150, while the sum is 27.

The square root of 71513235 is about 8456.5498283875. The cubic root of 71513235 is about 415.0771328058.

The spelling of 71513235 in words is "seventy-one million, five hundred thirteen thousand, two hundred thirty-five".