80440057 has 8 divisors (see below), whose sum is σ = 82450016. Its totient is φ = 78436512.

The previous prime is 80440051. The next prime is 80440079. The reversal of 80440057 is 75004408.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 80440057 - 2¹⁵ = 80407289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80440051) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32653 + ... + 35029.

It is an arithmetic number, because the mean of its divisors is an integer number (10306252).

Almost surely, 2^80440057 is an apocalyptic number.

It is an amenable number.

80440057 is a deficient number, since it is larger than the sum of its proper divisors (2009959).

80440057 is a wasteful number, since it uses less digits than its factorization.

80440057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3207.

The product of its (nonzero) digits is 4480, while the sum is 28.

The square root of 80440057 is about 8968.8381075812. The cubic root of 80440057 is about 431.6755555050.

The spelling of 80440057 in words is "eighty million, four hundred forty thousand, fifty-seven".