201472861 has 2 divisors, whose sum is σ = 201472862. Its totient is φ = 201472860.

The previous prime is 201472853. The next prime is 201472907. The reversal of 201472861 is 168274102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 201100761 + 372100 = 14181^2 + 610^2 .

It is a cyclic number.

It is not a de Polignac number, because 201472861 - 2³ = 201472853 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201472961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100736430 + 100736431.

It is an arithmetic number, because the mean of its divisors is an integer number (100736431).

Almost surely, 2^201472861 is an apocalyptic number.

It is an amenable number.

201472861 is a deficient number, since it is larger than the sum of its proper divisors (1).

201472861 is an equidigital number, since it uses as much as digits as its factorization.

201472861 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5376, while the sum is 31.

The square root of 201472861 is about 14194.1136038852. The cubic root of 201472861 is about 586.2355952592.

The spelling of 201472861 in words is "two hundred one million, four hundred seventy-two thousand, eight hundred sixty-one".