71533983 has 8 divisors (see below), whose sum is σ = 97596928. Its totient is φ = 46580184.

The previous prime is 71533967. The next prime is 71533997. The reversal of 71533983 is 38933517.

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

It is not a de Polignac number, because 71533983 - 2⁴ = 71533967 is a prime.

It is a super-2 number, since 2×71533983² = 10234221447688578, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71533883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 277135 + ... + 277392.

It is an arithmetic number, because the mean of its divisors is an integer number (12199616).

Almost surely, 2^71533983 is an apocalyptic number.

71533983 is a deficient number, since it is larger than the sum of its proper divisors (26062945).

71533983 is a wasteful number, since it uses less digits than its factorization.

71533983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 554573.

The product of its digits is 68040, while the sum is 39.

The square root of 71533983 is about 8457.7764808489. The cubic root of 71533983 is about 415.1172707729.

The spelling of 71533983 in words is "seventy-one million, five hundred thirty-three thousand, nine hundred eighty-three".