280863053 has 2 divisors, whose sum is σ = 280863054. Its totient is φ = 280863052.

The previous prime is 280863019. The next prime is 280863071. The reversal of 280863053 is 350368082.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 264322564 + 16540489 = 16258^2 + 4067^2 .

It is a cyclic number.

It is not a de Polignac number, because 280863053 - 2¹⁴ = 280846669 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (280863013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 140431526 + 140431527.

It is an arithmetic number, because the mean of its divisors is an integer number (140431527).

Almost surely, 2^280863053 is an apocalyptic number.

It is an amenable number.

280863053 is a deficient number, since it is larger than the sum of its proper divisors (1).

280863053 is an equidigital number, since it uses as much as digits as its factorization.

280863053 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34560, while the sum is 35.

The square root of 280863053 is about 16758.9693298842. The cubic root of 280863053 is about 654.8847401253.

The spelling of 280863053 in words is "two hundred eighty million, eight hundred sixty-three thousand, fifty-three".