201534401 has 2 divisors, whose sum is σ = 201534402. Its totient is φ = 201534400.

The previous prime is 201534373. The next prime is 201534413. The reversal of 201534401 is 104435102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 182385025 + 19149376 = 13505^2 + 4376^2 .

It is a cyclic number.

It is not a de Polignac number, because 201534401 - 2²⁶ = 134425537 is a prime.

It is a super-2 number, since 2×201534401² = 81232229572857602, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (201534481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100767200 + 100767201.

It is an arithmetic number, because the mean of its divisors is an integer number (100767201).

Almost surely, 2^201534401 is an apocalyptic number.

It is an amenable number.

201534401 is a deficient number, since it is larger than the sum of its proper divisors (1).

201534401 is an equidigital number, since it uses as much as digits as its factorization.

201534401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 201534401 is about 14196.2812384089. The cubic root of 201534401 is about 586.2952778483.

Adding to 201534401 its reverse (104435102), we get a palindrome (305969503).

The spelling of 201534401 in words is "two hundred one million, five hundred thirty-four thousand, four hundred one".