71530 has 16 divisors (see below), whose sum is σ = 134784. Its totient is φ = 27280.

The previous prime is 71527. The next prime is 71537. The reversal of 71530 is 3517.

It is not an unprimeable number, because it can be changed into a prime (71537) 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, 75 + ... + 385.

It is an arithmetic number, because the mean of its divisors is an integer number (8424).

2⁷¹⁵³⁰ is an apocalyptic number.

71530 is a deficient number, since it is larger than the sum of its proper divisors (63254).

71530 is a wasteful number, since it uses less digits than its factorization.

71530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 341.

The product of its (nonzero) digits is 105, while the sum is 16.

The square root of 71530 is about 267.4509300788. The cubic root of 71530 is about 41.5109566077.

The spelling of 71530 in words is "seventy-one thousand, five hundred thirty".