80354261 has 6 divisors (see below), whose sum is σ = 87011010. Its totient is φ = 74173008.

The previous prime is 80354251. The next prime is 80354279. The reversal of 80354261 is 16245308.

It can be written as a sum of positive squares in 3 ways, for example, as 1943236 + 78411025 = 1394^2 + 8855^2 .

It is a de Polignac number, because none of the positive numbers 2^k-80354261 is a prime.

It is a super-2 number, since 2×80354261² = 12913614521712242, 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 (80354231) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 237566 + ... + 237903.

It is an arithmetic number, because the mean of its divisors is an integer number (14501835).

Almost surely, 2^80354261 is an apocalyptic number.

It is an amenable number.

80354261 is a deficient number, since it is larger than the sum of its proper divisors (6656749).

80354261 is a wasteful number, since it uses less digits than its factorization.

80354261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 475495 (or 475482 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 80354261 is about 8964.0538262552. The cubic root of 80354261 is about 431.5220283011.

Adding to 80354261 its reverse (16245308), we get a palindrome (96599569).

The spelling of 80354261 in words is "eighty million, three hundred fifty-four thousand, two hundred sixty-one".