71533089 has 12 divisors (see below), whose sum is σ = 106659072. Its totient is φ = 46150200.

The previous prime is 71533087. The next prime is 71533117. The reversal of 71533089 is 98033517.

It is not a de Polignac number, because 71533089 - 2¹ = 71533087 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (71533087) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 127917 + ... + 128474.

It is an arithmetic number, because the mean of its divisors is an integer number (8888256).

Almost surely, 2^71533089 is an apocalyptic number.

It is an amenable number.

71533089 is a deficient number, since it is larger than the sum of its proper divisors (35125983).

71533089 is a wasteful number, since it uses less digits than its factorization.

71533089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256428 (or 256425 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 36.

The square root of 71533089 is about 8457.7236299137. The cubic root of 71533089 is about 415.1155414485.

The spelling of 71533089 in words is "seventy-one million, five hundred thirty-three thousand, eighty-nine".