71057199 has 8 divisors (see below), whose sum is σ = 96946432. Its totient is φ = 46269720.

The previous prime is 71057197. The next prime is 71057201. The reversal of 71057199 is 99175017.

It is an interprime number because it is at equal distance from previous prime (71057197) and next prime (71057201).

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

It is not a de Polignac number, because 71057199 - 2¹ = 71057197 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 (71057191) 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, 275287 + ... + 275544.

It is an arithmetic number, because the mean of its divisors is an integer number (12118304).

Almost surely, 2^71057199 is an apocalyptic number.

71057199 is a deficient number, since it is larger than the sum of its proper divisors (25889233).

71057199 is a wasteful number, since it uses less digits than its factorization.

71057199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 550877.

The product of its (nonzero) digits is 19845, while the sum is 39.

The square root of 71057199 is about 8429.5432260592. The cubic root of 71057199 is about 414.1929425756.

The spelling of 71057199 in words is "seventy-one million, fifty-seven thousand, one hundred ninety-nine".