201401569 has 2 divisors, whose sum is σ = 201401570. Its totient is φ = 201401568.

The previous prime is 201401561. The next prime is 201401579. The reversal of 201401569 is 965104102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 115283169 + 86118400 = 10737^2 + 9280^2 .

It is a cyclic number.

It is not a de Polignac number, because 201401569 - 2³ = 201401561 is a prime.

It is a super-2 number, since 2×201401569² = 81125183991323522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (201401561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100700784 + 100700785.

It is an arithmetic number, because the mean of its divisors is an integer number (100700785).

Almost surely, 2^201401569 is an apocalyptic number.

It is an amenable number.

201401569 is a deficient number, since it is larger than the sum of its proper divisors (1).

201401569 is an equidigital number, since it uses as much as digits as its factorization.

201401569 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 201401569 is about 14191.6020589643. The cubic root of 201401569 is about 586.1664398099.

The spelling of 201401569 in words is "two hundred one million, four hundred one thousand, five hundred sixty-nine".