73506491 has 2 divisors, whose sum is σ = 73506492. Its totient is φ = 73506490.

The previous prime is 73506451. The next prime is 73506493. The reversal of 73506491 is 19460537.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-73506491 is a prime.

Together with 73506493, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (73506493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36753245 + 36753246.

It is an arithmetic number, because the mean of its divisors is an integer number (36753246).

Almost surely, 2^73506491 is an apocalyptic number.

73506491 is a deficient number, since it is larger than the sum of its proper divisors (1).

73506491 is an equidigital number, since it uses as much as digits as its factorization.

73506491 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22680, while the sum is 35.

The square root of 73506491 is about 8573.5926541911. The cubic root of 73506491 is about 418.8982670631.

The spelling of 73506491 in words is "seventy-three million, five hundred six thousand, four hundred ninety-one".