80497621 has 2 divisors, whose sum is σ = 80497622. Its totient is φ = 80497620.

The previous prime is 80497609. The next prime is 80497639. The reversal of 80497621 is 12679408.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 57168721 + 23328900 = 7561^2 + 4830^2 .

It is a cyclic number.

It is not a de Polignac number, because 80497621 - 2⁵ = 80497589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80497121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40248810 + 40248811.

It is an arithmetic number, because the mean of its divisors is an integer number (40248811).

Almost surely, 2^80497621 is an apocalyptic number.

It is an amenable number.

80497621 is a deficient number, since it is larger than the sum of its proper divisors (1).

80497621 is an equidigital number, since it uses as much as digits as its factorization.

80497621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24192, while the sum is 37.

The square root of 80497621 is about 8972.0466449969. The cubic root of 80497621 is about 431.7785019206.

It can be divided in two parts, 80497 and 621, that added together give a palindrome (81118).

The spelling of 80497621 in words is "eighty million, four hundred ninety-seven thousand, six hundred twenty-one".