71552345 has 8 divisors (see below), whose sum is σ = 85916160. Its totient is φ = 57206320.

The previous prime is 71552321. The next prime is 71552353. The reversal of 71552345 is 54325517.

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

It is not a de Polignac number, because 71552345 - 2²² = 67358041 is a prime.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 7166 + ... + 13944.

It is an arithmetic number, because the mean of its divisors is an integer number (10739520).

Almost surely, 2^71552345 is an apocalyptic number.

It is an amenable number.

71552345 is a deficient number, since it is larger than the sum of its proper divisors (14363815).

71552345 is a wasteful number, since it uses less digits than its factorization.

71552345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8895.

The product of its digits is 21000, while the sum is 32.

The square root of 71552345 is about 8458.8619210861. The cubic root of 71552345 is about 415.1527864393.

The spelling of 71552345 in words is "seventy-one million, five hundred fifty-two thousand, three hundred forty-five".