71534 has 8 divisors (see below), whose sum is σ = 109728. Its totient is φ = 34960.

The previous prime is 71527. The next prime is 71537. The reversal of 71534 is 43517.

It is a happy number.

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

It is a super-2 number, since 2×71534² = 10234226312, which contains 22 as substring.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 287 + ... + 474.

It is an arithmetic number, because the mean of its divisors is an integer number (13716).

2⁷¹⁵³⁴ is an apocalyptic number.

71534 is a deficient number, since it is larger than the sum of its proper divisors (38194).

71534 is a wasteful number, since it uses less digits than its factorization.

71534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 810.

The product of its digits is 420, while the sum is 20.

The square root of 71534 is about 267.4584079815. The cubic root of 71534 is about 41.5117303657.

It can be divided in two parts, 715 and 34, that multiplied together give a triangular number (24310 = T₂₂₀).

The spelling of 71534 in words is "seventy-one thousand, five hundred thirty-four".