71515076 has 6 divisors (see below), whose sum is σ = 125151390. Its totient is φ = 35757536.

The previous prime is 71515051. The next prime is 71515079. The reversal of 71515076 is 67051517.

It can be written as a sum of positive squares in only one way, i.e., 67634176 + 3880900 = 8224^2 + 1970^2 .

It is a super-2 number, since 2×71515076² = 10228812190571552, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (71515079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8939381 + ... + 8939388.

It is an arithmetic number, because the mean of its divisors is an integer number (20858565).

Almost surely, 2^71515076 is an apocalyptic number.

It is an amenable number.

71515076 is a deficient number, since it is larger than the sum of its proper divisors (53636314).

71515076 is a wasteful number, since it uses less digits than its factorization.

71515076 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17878773 (or 17878771 counting only the distinct ones).

The product of its (nonzero) digits is 7350, while the sum is 32.

The square root of 71515076 is about 8456.6586782251. The cubic root of 71515076 is about 415.0806946195.

The spelling of 71515076 in words is "seventy-one million, five hundred fifteen thousand, seventy-six".