71500857 has 16 divisors (see below), whose sum is σ = 100618560. Its totient is φ = 45038592.

The previous prime is 71500837. The next prime is 71500879. The reversal of 71500857 is 75800517.

It is not a de Polignac number, because 71500857 - 2⁷ = 71500729 is a prime.

It is a super-2 number, since 2×71500857² = 10224745103468898, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (71500817) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23233 + ... + 26129.

It is an arithmetic number, because the mean of its divisors is an integer number (6288660).

Almost surely, 2^71500857 is an apocalyptic number.

It is an amenable number.

71500857 is a deficient number, since it is larger than the sum of its proper divisors (29117703).

71500857 is a wasteful number, since it uses less digits than its factorization.

71500857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3352.

The product of its (nonzero) digits is 9800, while the sum is 33.

The square root of 71500857 is about 8455.8179379644. The cubic root of 71500857 is about 415.0531832940.

It can be divided in two parts, 715008 and 57, that multiplied together give a square (40755456 = 6384²).

The spelling of 71500857 in words is "seventy-one million, five hundred thousand, eight hundred fifty-seven".