71538417 has 16 divisors (see below), whose sum is σ = 106125760. Its totient is φ = 47628000.

The previous prime is 71538413. The next prime is 71538419. The reversal of 71538417 is 71483517.

It is not a de Polignac number, because 71538417 - 2² = 71538413 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71538413) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 27117 + ... + 29637.

It is an arithmetic number, because the mean of its divisors is an integer number (6632860).

Almost surely, 2^71538417 is an apocalyptic number.

It is an amenable number.

71538417 is a deficient number, since it is larger than the sum of its proper divisors (34587343).

71538417 is a wasteful number, since it uses less digits than its factorization.

71538417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3581 (or 3575 counting only the distinct ones).

The product of its digits is 23520, while the sum is 36.

The square root of 71538417 is about 8458.0386024184. The cubic root of 71538417 is about 415.1258475448.

The spelling of 71538417 in words is "seventy-one million, five hundred thirty-eight thousand, four hundred seventeen".