71033057 has 4 divisors (see below), whose sum is σ = 71121456. Its totient is φ = 70944660.

The previous prime is 71033051. The next prime is 71033069. The reversal of 71033057 is 75033017.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 75033017 = 113 ⋅664009.

It is a cyclic number.

It is not a de Polignac number, because 71033057 - 2¹⁶ = 70967521 is a prime.

It is not an unprimeable number, because it can be changed into a prime (71033051) 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 3 ways as a sum of consecutive naturals, for example, 42983 + ... + 44604.

It is an arithmetic number, because the mean of its divisors is an integer number (17780364).

Almost surely, 2^71033057 is an apocalyptic number.

It is an amenable number.

71033057 is a deficient number, since it is larger than the sum of its proper divisors (88399).

71033057 is an equidigital number, since it uses as much as digits as its factorization.

71033057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88398.

The product of its (nonzero) digits is 2205, while the sum is 26.

The square root of 71033057 is about 8428.1111169704. Note that the first 5 decimals coincide. The cubic root of 71033057 is about 414.1460292963.

The spelling of 71033057 in words is "seventy-one million, thirty-three thousand, fifty-seven".