201530401 has 8 divisors (see below), whose sum is σ = 205086560. Its totient is φ = 198004608.

The previous prime is 201530383. The next prime is 201530419. The reversal of 201530401 is 104035102.

It is an interprime number because it is at equal distance from previous prime (201530383) and next prime (201530419).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 201530401 - 2⁵ = 201530369 is a prime.

It is a super-2 number, since 2×201530401² = 81229005054441602, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201530431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6010 + ... + 20956.

It is an arithmetic number, because the mean of its divisors is an integer number (25635820).

Almost surely, 2^201530401 is an apocalyptic number.

It is an amenable number.

201530401 is a deficient number, since it is larger than the sum of its proper divisors (3556159).

201530401 is a wasteful number, since it uses less digits than its factorization.

201530401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15183.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 201530401 is about 14196.1403557446. The cubic root of 201530401 is about 586.2913989462.

Adding to 201530401 its reverse (104035102), we get a palindrome (305565503).

The spelling of 201530401 in words is "two hundred one million, five hundred thirty thousand, four hundred one".