280402601 has 2 divisors, whose sum is σ = 280402602. Its totient is φ = 280402600.

The previous prime is 280402597. The next prime is 280402663. The reversal of 280402601 is 106204082.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 239506576 + 40896025 = 15476^2 + 6395^2 .

It is a cyclic number.

It is not a de Polignac number, because 280402601 - 2² = 280402597 is a prime.

It is not a weakly prime, because it can be changed into another prime (280402691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 140201300 + 140201301.

It is an arithmetic number, because the mean of its divisors is an integer number (140201301).

Almost surely, 2^280402601 is an apocalyptic number.

It is an amenable number.

280402601 is a deficient number, since it is larger than the sum of its proper divisors (1).

280402601 is an equidigital number, since it uses as much as digits as its factorization.

280402601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 280402601 is about 16745.2262152531. The cubic root of 280402601 is about 654.5266677239.

Adding to 280402601 its reverse (106204082), we get a palindrome (386606683).

The spelling of 280402601 in words is "two hundred eighty million, four hundred two thousand, six hundred one".