80140261 has 16 divisors (see below), whose sum is σ = 89204544. Its totient is φ = 71656704.

The previous prime is 80140237. The next prime is 80140289. The reversal of 80140261 is 16204108.

It is a cyclic number.

It is not a de Polignac number, because 80140261 - 2⁷ = 80140133 is a prime.

It is a super-2 number, since 2×80140261² = 12844922866296242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80140561) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25566 + ... + 28528.

It is an arithmetic number, because the mean of its divisors is an integer number (5575284).

Almost surely, 2^80140261 is an apocalyptic number.

It is an amenable number.

80140261 is a deficient number, since it is larger than the sum of its proper divisors (9064283).

80140261 is a wasteful number, since it uses less digits than its factorization.

80140261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3060.

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 80140261 is about 8952.1093045159. The cubic root of 80140261 is about 431.1386102845.

Adding to 80140261 its reverse (16204108), we get a palindrome (96344369).

The spelling of 80140261 in words is "eighty million, one hundred forty thousand, two hundred sixty-one".