73182521 has 2 divisors, whose sum is σ = 73182522. Its totient is φ = 73182520.

The previous prime is 73182503. The next prime is 73182553. The reversal of 73182521 is 12528137.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 72863296 + 319225 = 8536^2 + 565^2 .

It is a cyclic number.

It is not a de Polignac number, because 73182521 - 2¹⁰ = 73181497 is a prime.

It is not a weakly prime, because it can be changed into another prime (73182721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36591260 + 36591261.

It is an arithmetic number, because the mean of its divisors is an integer number (36591261).

Almost surely, 2^73182521 is an apocalyptic number.

It is an amenable number.

73182521 is a deficient number, since it is larger than the sum of its proper divisors (1).

73182521 is an equidigital number, since it uses as much as digits as its factorization.

73182521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3360, while the sum is 29.

The square root of 73182521 is about 8554.6783107257. The cubic root of 73182521 is about 418.2819480842.

The spelling of 73182521 in words is "seventy-three million, one hundred eighty-two thousand, five hundred twenty-one".