71552643 has 12 divisors (see below), whose sum is σ = 101346840. Its totient is φ = 44895232.

The previous prime is 71552623. The next prime is 71552647. The reversal of 71552643 is 34625517.

It is not a de Polignac number, because 71552643 - 2¹⁴ = 71536259 is a prime.

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 11 ways as a sum of consecutive naturals, for example, 40398 + ... + 42131.

It is an arithmetic number, because the mean of its divisors is an integer number (8445570).

Almost surely, 2^71552643 is an apocalyptic number.

71552643 is a deficient number, since it is larger than the sum of its proper divisors (29794197).

71552643 is a wasteful number, since it uses less digits than its factorization.

71552643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82566 (or 82549 counting only the distinct ones).

The product of its digits is 25200, while the sum is 33.

The square root of 71552643 is about 8458.8795357305. The cubic root of 71552643 is about 415.1533627790.

The spelling of 71552643 in words is "seventy-one million, five hundred fifty-two thousand, six hundred forty-three".