201225977 has 2 divisors, whose sum is σ = 201225978. Its totient is φ = 201225976.

The previous prime is 201225971. The next prime is 201225989. The reversal of 201225977 is 779522102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 126247696 + 74978281 = 11236^2 + 8659^2 .

It is a cyclic number.

It is not a de Polignac number, because 201225977 - 2⁴ = 201225961 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (201225971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100612988 + 100612989.

It is an arithmetic number, because the mean of its divisors is an integer number (100612989).

Almost surely, 2^201225977 is an apocalyptic number.

It is an amenable number.

201225977 is a deficient number, since it is larger than the sum of its proper divisors (1).

201225977 is an equidigital number, since it uses as much as digits as its factorization.

201225977 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17640, while the sum is 35.

The square root of 201225977 is about 14185.4142343465. The cubic root of 201225977 is about 585.9960405018.

It can be divided in two parts, 201225 and 977, that added together give a palindrome (202202).

The spelling of 201225977 in words is "two hundred one million, two hundred twenty-five thousand, nine hundred seventy-seven".