201015401 has 4 divisors (see below), whose sum is σ = 201062400. Its totient is φ = 200968404.

The previous prime is 201015359. The next prime is 201015403. The reversal of 201015401 is 104510102.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 104510102 = 2 ⋅52255051.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201015401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201015403) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16361 + ... + 25878.

It is an arithmetic number, because the mean of its divisors is an integer number (50265600).

Almost surely, 2^201015401 is an apocalyptic number.

It is an amenable number.

201015401 is a deficient number, since it is larger than the sum of its proper divisors (46999).

201015401 is an equidigital number, since it uses as much as digits as its factorization.

201015401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46998.

The product of its (nonzero) digits is 40, while the sum is 14.

The square root of 201015401 is about 14177.9900197454. The cubic root of 201015401 is about 585.7915609865.

Adding to 201015401 its reverse (104510102), we get a palindrome (305525503).

The spelling of 201015401 in words is "two hundred one million, fifteen thousand, four hundred one".