285861101 has 2 divisors, whose sum is σ = 285861102. Its totient is φ = 285861100.

The previous prime is 285860999. The next prime is 285861131. The reversal of 285861101 is 101168582.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 189723076 + 96138025 = 13774^2 + 9805^2 .

It is a cyclic number.

It is not a de Polignac number, because 285861101 - 2²² = 281666797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (285861131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 142930550 + 142930551.

It is an arithmetic number, because the mean of its divisors is an integer number (142930551).

Almost surely, 2^285861101 is an apocalyptic number.

It is an amenable number.

285861101 is a deficient number, since it is larger than the sum of its proper divisors (1).

285861101 is an equidigital number, since it uses as much as digits as its factorization.

285861101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3840, while the sum is 32.

The square root of 285861101 is about 16907.4273915342. The cubic root of 285861101 is about 658.7465504442.

The spelling of 285861101 in words is "two hundred eighty-five million, eight hundred sixty-one thousand, one hundred one".