283661551 has 2 divisors, whose sum is σ = 283661552. Its totient is φ = 283661550.

The previous prime is 283661531. The next prime is 283661561. The reversal of 283661551 is 155166382.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 283661551 - 2⁵ = 283661519 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 283661551.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (283661531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 141830775 + 141830776.

It is an arithmetic number, because the mean of its divisors is an integer number (141830776).

Almost surely, 2^283661551 is an apocalyptic number.

283661551 is a deficient number, since it is larger than the sum of its proper divisors (1).

283661551 is an equidigital number, since it uses as much as digits as its factorization.

283661551 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 43200, while the sum is 37.

The square root of 283661551 is about 16842.2549262265. The cubic root of 283661551 is about 657.0526295983.

The spelling of 283661551 in words is "two hundred eighty-three million, six hundred sixty-one thousand, five hundred fifty-one".