71552645 has 8 divisors (see below), whose sum is σ = 87860256. Its totient is φ = 55910736.

The previous prime is 71552623. The next prime is 71552647. The reversal of 71552645 is 54625517.

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

It is a cyclic number.

It is not a de Polignac number, because 71552645 - 2⁸ = 71552389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71552647) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 166187 + ... + 166616.

It is an arithmetic number, because the mean of its divisors is an integer number (10982532).

Almost surely, 2^71552645 is an apocalyptic number.

It is an amenable number.

71552645 is a deficient number, since it is larger than the sum of its proper divisors (16307611).

71552645 is a wasteful number, since it uses less digits than its factorization.

71552645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 332851.

The product of its digits is 42000, while the sum is 35.

The square root of 71552645 is about 8458.8796539495. The cubic root of 71552645 is about 415.1533666470.

The spelling of 71552645 in words is "seventy-one million, five hundred fifty-two thousand, six hundred forty-five".