280152491 has 2 divisors, whose sum is σ = 280152492. Its totient is φ = 280152490.

The previous prime is 280152479. The next prime is 280152529. The reversal of 280152491 is 194251082.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 280152491 - 2⁶ = 280152427 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (280152451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 140076245 + 140076246.

It is an arithmetic number, because the mean of its divisors is an integer number (140076246).

Almost surely, 2^280152491 is an apocalyptic number.

280152491 is a deficient number, since it is larger than the sum of its proper divisors (1).

280152491 is an equidigital number, since it uses as much as digits as its factorization.

280152491 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5760, while the sum is 32.

The square root of 280152491 is about 16737.7564506119. The cubic root of 280152491 is about 654.3320043349.

The spelling of 280152491 in words is "two hundred eighty million, one hundred fifty-two thousand, four hundred ninety-one".