80371549 has 2 divisors, whose sum is σ = 80371550. Its totient is φ = 80371548.

The previous prime is 80371547. The next prime is 80371553. The reversal of 80371549 is 94517308.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 80371225 + 324 = 8965^2 + 18^2 .

It is a cyclic number.

It is not a de Polignac number, because 80371549 - 2¹ = 80371547 is a prime.

Together with 80371547, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80371547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40185774 + 40185775.

It is an arithmetic number, because the mean of its divisors is an integer number (40185775).

Almost surely, 2^80371549 is an apocalyptic number.

It is an amenable number.

80371549 is a deficient number, since it is larger than the sum of its proper divisors (1).

80371549 is an equidigital number, since it uses as much as digits as its factorization.

80371549 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 80371549 is about 8965.0180702551. The cubic root of 80371549 is about 431.5529730110.

The spelling of 80371549 in words is "eighty million, three hundred seventy-one thousand, five hundred forty-nine".