71223755 has 16 divisors (see below), whose sum is σ = 89674560. Its totient is φ = 54202368.

The previous prime is 71223743. The next prime is 71223769. The reversal of 71223755 is 55732217.

It is a cyclic number.

It is not a de Polignac number, because 71223755 - 2⁸ = 71223499 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20591 + ... + 23799.

It is an arithmetic number, because the mean of its divisors is an integer number (5604660).

Almost surely, 2^71223755 is an apocalyptic number.

71223755 is a deficient number, since it is larger than the sum of its proper divisors (18450805).

71223755 is a wasteful number, since it uses less digits than its factorization.

71223755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3430.

The product of its digits is 14700, while the sum is 32.

The square root of 71223755 is about 8439.4167452496. The cubic root of 71223755 is about 414.5163087752.

The spelling of 71223755 in words is "seventy-one million, two hundred twenty-three thousand, seven hundred fifty-five".