71500215 has 64 divisors (see below), whose sum is σ = 128894976. Its totient is φ = 33656832.

The previous prime is 71500201. The next prime is 71500217. The reversal of 71500215 is 51200517.

It is not a de Polignac number, because 71500215 - 2⁴ = 71500199 is a prime.

It is a super-2 number, since 2×71500215² = 10224561490092450, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 71500191 and 71500200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71500217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 428062 + ... + 428228.

It is an arithmetic number, because the mean of its divisors is an integer number (2013984).

Almost surely, 2^71500215 is an apocalyptic number.

71500215 is a deficient number, since it is larger than the sum of its proper divisors (57394761).

71500215 is a wasteful number, since it uses less digits than its factorization.

71500215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288.

The product of its (nonzero) digits is 350, while the sum is 21.

The square root of 71500215 is about 8455.7799758508. The cubic root of 71500215 is about 415.0519410481.

The spelling of 71500215 in words is "seventy-one million, five hundred thousand, two hundred fifteen".