71528833 has 2 divisors, whose sum is σ = 71528834. Its totient is φ = 71528832.

The previous prime is 71528797. The next prime is 71528861. The reversal of 71528833 is 33882517.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 44249104 + 27279729 = 6652^2 + 5223^2 .

It is a cyclic number.

It is not a de Polignac number, because 71528833 - 2¹⁷ = 71397761 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 71528792 and 71528801.

It is not a weakly prime, because it can be changed into another prime (71528893) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35764416 + 35764417.

It is an arithmetic number, because the mean of its divisors is an integer number (35764417).

Almost surely, 2^71528833 is an apocalyptic number.

It is an amenable number.

71528833 is a deficient number, since it is larger than the sum of its proper divisors (1).

71528833 is an equidigital number, since it uses as much as digits as its factorization.

71528833 is an evil number, because the sum of its binary digits is even.

The product of its digits is 40320, while the sum is 37.

The square root of 71528833 is about 8457.4720218278. The cubic root of 71528833 is about 415.1073085836.

It can be divided in two parts, 71528 and 833, that added together give a square (72361 = 269²).

The spelling of 71528833 in words is "seventy-one million, five hundred twenty-eight thousand, eight hundred thirty-three".