71220059 has 4 divisors (see below), whose sum is σ = 72078216. Its totient is φ = 70361904.

The previous prime is 71220053. The next prime is 71220091. The reversal of 71220059 is 95002217.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 71220059 - 2⁴ = 71220043 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71220053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 428954 + ... + 429119.

It is an arithmetic number, because the mean of its divisors is an integer number (18019554).

Almost surely, 2^71220059 is an apocalyptic number.

71220059 is a deficient number, since it is larger than the sum of its proper divisors (858157).

71220059 is an equidigital number, since it uses as much as digits as its factorization.

71220059 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 858156.

The product of its (nonzero) digits is 1260, while the sum is 26.

The square root of 71220059 is about 8439.1977699305. The cubic root of 71220059 is about 414.5091385141.

The spelling of 71220059 in words is "seventy-one million, two hundred twenty thousand, fifty-nine".