80158261 has 2 divisors, whose sum is σ = 80158262. Its totient is φ = 80158260.

The previous prime is 80158249. The next prime is 80158271. The reversal of 80158261 is 16285108.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 53377636 + 26780625 = 7306^2 + 5175^2 .

It is a cyclic number.

It is not a de Polignac number, because 80158261 - 2¹¹ = 80156213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80158231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40079130 + 40079131.

It is an arithmetic number, because the mean of its divisors is an integer number (40079131).

Almost surely, 2^80158261 is an apocalyptic number.

It is an amenable number.

80158261 is a deficient number, since it is larger than the sum of its proper divisors (1).

80158261 is an equidigital number, since it uses as much as digits as its factorization.

80158261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3840, while the sum is 31.

The square root of 80158261 is about 8953.1145977252. The cubic root of 80158261 is about 431.1708866707.

The spelling of 80158261 in words is "eighty million, one hundred fifty-eight thousand, two hundred sixty-one".