280552245 has 16 divisors (see below), whose sum is σ = 453330432. Its totient is φ = 148145600.

The previous prime is 280552243. The next prime is 280552273. The reversal of 280552245 is 542255082.

It is a happy number.

It is not a de Polignac number, because 280552245 - 2¹ = 280552243 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (280552243) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 91077 + ... + 94106.

It is an arithmetic number, because the mean of its divisors is an integer number (28333152).

Almost surely, 2^280552245 is an apocalyptic number.

It is an amenable number.

280552245 is a deficient number, since it is larger than the sum of its proper divisors (172778187).

280552245 is a wasteful number, since it uses less digits than its factorization.

280552245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185292.

The product of its (nonzero) digits is 32000, while the sum is 33.

The square root of 280552245 is about 16749.6938777997. The cubic root of 280552245 is about 654.6430819674.

The spelling of 280552245 in words is "two hundred eighty million, five hundred fifty-two thousand, two hundred forty-five".