280112057 has 4 divisors (see below), whose sum is σ = 286071936. Its totient is φ = 274152180.

The previous prime is 280112051. The next prime is 280112069. The reversal of 280112057 is 750211082.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-280112057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (280112051) 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, 2979869 + ... + 2979962.

It is an arithmetic number, because the mean of its divisors is an integer number (71517984).

Almost surely, 2^280112057 is an apocalyptic number.

It is an amenable number.

280112057 is a deficient number, since it is larger than the sum of its proper divisors (5959879).

280112057 is an equidigital number, since it uses as much as digits as its factorization.

280112057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5959878.

The product of its (nonzero) digits is 1120, while the sum is 26.

The square root of 280112057 is about 16736.5485390507. The cubic root of 280112057 is about 654.3005232260.

The spelling of 280112057 in words is "two hundred eighty million, one hundred twelve thousand, fifty-seven".