71534530 has 32 divisors (see below), whose sum is σ = 131040000. Its totient is φ = 28112832.

The previous prime is 71534501. The next prime is 71534549. The reversal of 71534530 is 3543517.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 204796 + ... + 205144.

It is an arithmetic number, because the mean of its divisors is an integer number (4095000).

Almost surely, 2^71534530 is an apocalyptic number.

71534530 is a deficient number, since it is larger than the sum of its proper divisors (59505470).

71534530 is a wasteful number, since it uses less digits than its factorization.

71534530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 658.

The product of its (nonzero) digits is 6300, while the sum is 28.

The square root of 71534530 is about 8457.8088178913. The cubic root of 71534530 is about 415.1183288648.

It can be divided in two parts, 715 and 34530, that added together give a triangular number (35245 = T₂₆₅).

The spelling of 71534530 in words is "seventy-one million, five hundred thirty-four thousand, five hundred thirty".