80457381 has 40 divisors (see below), whose sum is σ = 132073920. Its totient is φ = 48584448.

The previous prime is 80457367. The next prime is 80457383. The reversal of 80457381 is 18375408.

80457381 is a `hidden beast` number, since 8 + 0 + 4 + 573 + 81 = 666.

It is not a de Polignac number, because 80457381 - 2¹⁰ = 80456357 is a prime.

It is a super-2 number, since 2×80457381² = 12946780314758322, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80457383) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 34261 + ... + 36533.

It is an arithmetic number, because the mean of its divisors is an integer number (3301848).

Almost surely, 2^80457381 is an apocalyptic number.

80457381 is a gapful number since it is divisible by the number (81) formed by its first and last digit.

It is an amenable number.

80457381 is a deficient number, since it is larger than the sum of its proper divisors (51616539).

80457381 is a wasteful number, since it uses less digits than its factorization.

80457381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2327 (or 2318 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 36.

The square root of 80457381 is about 8969.8038440091. The cubic root of 80457381 is about 431.7065425978.

It can be divided in two parts, 804 and 57381, that added together give a palindrome (58185).

The spelling of 80457381 in words is "eighty million, four hundred fifty-seven thousand, three hundred eighty-one".