80361261 has 16 divisors (see below), whose sum is σ = 126057600. Its totient is φ = 50422464.

The previous prime is 80361257. The next prime is 80361283. The reversal of 80361261 is 16216308.

It is not a de Polignac number, because 80361261 - 2² = 80361257 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80361251) 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, 87081 + ... + 87998.

It is an arithmetic number, because the mean of its divisors is an integer number (7878600).

Almost surely, 2^80361261 is an apocalyptic number.

It is an amenable number.

80361261 is a deficient number, since it is larger than the sum of its proper divisors (45696339).

80361261 is a wasteful number, since it uses less digits than its factorization.

80361261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175105 (or 175099 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 80361261 is about 8964.4442660993. Note that the first 3 decimals coincide. The cubic root of 80361261 is about 431.5345585078.

Adding to 80361261 its reverse (16216308), we get a palindrome (96577569).

The spelling of 80361261 in words is "eighty million, three hundred sixty-one thousand, two hundred sixty-one".