71513229 has 8 divisors (see below), whose sum is σ = 95391520. Its totient is φ = 47655216.

The previous prime is 71513227. The next prime is 71513231. The reversal of 71513229 is 92231517.

It is an interprime number because it is at equal distance from previous prime (71513227) and next prime (71513231).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 71513229 - 2¹ = 71513227 is a prime.

It is a super-2 number, since 2×71513229² = 10228283844012882, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 71513196 and 71513205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71513227) 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 7 ways as a sum of consecutive naturals, for example, 7914 + ... + 14340.

It is an arithmetic number, because the mean of its divisors is an integer number (11923940).

Almost surely, 2^71513229 is an apocalyptic number.

It is an amenable number.

71513229 is a deficient number, since it is larger than the sum of its proper divisors (23878291).

71513229 is a wasteful number, since it uses less digits than its factorization.

71513229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10139.

The product of its digits is 3780, while the sum is 30.

The square root of 71513229 is about 8456.5494736328. The cubic root of 71513229 is about 415.0771211974.

The spelling of 71513229 in words is "seventy-one million, five hundred thirteen thousand, two hundred twenty-nine".