73496581 has 2 divisors, whose sum is σ = 73496582. Its totient is φ = 73496580.

The previous prime is 73496557. The next prime is 73496597. The reversal of 73496581 is 18569437.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 73256481 + 240100 = 8559^2 + 490^2 .

It is a cyclic number.

It is not a de Polignac number, because 73496581 - 2¹⁵ = 73463813 is a prime.

It is a super-2 number, since 2×73496581² = 10803494837379122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73496081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36748290 + 36748291.

It is an arithmetic number, because the mean of its divisors is an integer number (36748291).

Almost surely, 2^73496581 is an apocalyptic number.

It is an amenable number.

73496581 is a deficient number, since it is larger than the sum of its proper divisors (1).

73496581 is an equidigital number, since it uses as much as digits as its factorization.

73496581 is an evil number, because the sum of its binary digits is even.

The product of its digits is 181440, while the sum is 43.

The square root of 73496581 is about 8573.0146972929. The cubic root of 73496581 is about 418.8794412046.

The spelling of 73496581 in words is "seventy-three million, four hundred ninety-six thousand, five hundred eighty-one".