80802261 has 12 divisors (see below), whose sum is σ = 117918892. Its totient is φ = 53312256.

The previous prime is 80802257. The next prime is 80802277. The reversal of 80802261 is 16220808.

It can be written as a sum of positive squares in 2 ways, for example, as 20196036 + 60606225 = 4494^2 + 7785^2 .

It is not a de Polignac number, because 80802261 - 2² = 80802257 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80802221) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 45406 + ... + 47151.

Almost surely, 2^80802261 is an apocalyptic number.

It is an amenable number.

80802261 is a deficient number, since it is larger than the sum of its proper divisors (37116631).

80802261 is a wasteful number, since it uses less digits than its factorization.

80802261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92660 (or 92657 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 27.

The square root of 80802261 is about 8989.0077872922. The cubic root of 80802261 is about 432.3224990269.

The spelling of 80802261 in words is "eighty million, eight hundred two thousand, two hundred sixty-one".