80745547 has 2 divisors, whose sum is σ = 80745548. Its totient is φ = 80745546.

The previous prime is 80745527. The next prime is 80745551. The reversal of 80745547 is 74554708.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 80745547 - 2²³ = 72356939 is a prime.

It is not a weakly prime, because it can be changed into another prime (80745527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40372773 + 40372774.

It is an arithmetic number, because the mean of its divisors is an integer number (40372774).

Almost surely, 2^80745547 is an apocalyptic number.

80745547 is a deficient number, since it is larger than the sum of its proper divisors (1).

80745547 is an equidigital number, since it uses as much as digits as its factorization.

80745547 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 156800, while the sum is 40.

The square root of 80745547 is about 8985.8526028419. The cubic root of 80745547 is about 432.2213282733.

The spelling of 80745547 in words is "eighty million, seven hundred forty-five thousand, five hundred forty-seven".