71755133 has 2 divisors, whose sum is σ = 71755134. Its totient is φ = 71755132.

The previous prime is 71755121. The next prime is 71755183. The reversal of 71755133 is 33155717.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 44328964 + 27426169 = 6658^2 + 5237^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71755133 is a prime.

It is a super-2 number, since 2×71755133² = 10297598223695378, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 71755133.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71755183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35877566 + 35877567.

It is an arithmetic number, because the mean of its divisors is an integer number (35877567).

Almost surely, 2^71755133 is an apocalyptic number.

It is an amenable number.

71755133 is a deficient number, since it is larger than the sum of its proper divisors (1).

71755133 is an equidigital number, since it uses as much as digits as its factorization.

71755133 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11025, while the sum is 32.

The square root of 71755133 is about 8470.8401590397. The cubic root of 71755133 is about 415.5446142462.

The spelling of 71755133 in words is "seventy-one million, seven hundred fifty-five thousand, one hundred thirty-three".