80451381 has 4 divisors (see below), whose sum is σ = 107268512. Its totient is φ = 53634252.

The previous prime is 80451373. The next prime is 80451391. The reversal of 80451381 is 18315408.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 80451381 - 2³ = 80451373 is a prime.

It is a super-2 number, since 2×80451381² = 12944849409614322, 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 (80451311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13408561 + ... + 13408566.

It is an arithmetic number, because the mean of its divisors is an integer number (26817128).

Almost surely, 2^80451381 is an apocalyptic number.

It is an amenable number.

80451381 is a deficient number, since it is larger than the sum of its proper divisors (26817131).

80451381 is a wasteful number, since it uses less digits than its factorization.

80451381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26817130.

The product of its (nonzero) digits is 3840, while the sum is 30.

The square root of 80451381 is about 8969.4693822990. The cubic root of 80451381 is about 431.6958110212.

Adding to 80451381 its reverse (18315408), we get a palindrome (98766789).

The spelling of 80451381 in words is "eighty million, four hundred fifty-one thousand, three hundred eighty-one".