201520411 has 8 divisors (see below), whose sum is σ = 210712320. Its totient is φ = 192364392.

The previous prime is 201520379. The next prime is 201520433. The reversal of 201520411 is 114025102.

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 201520411 - 2⁵ = 201520379 is a prime.

It is a super-2 number, since 2×201520411² = 81220952099217842, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201520811) 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 in 7 ways as a sum of consecutive naturals, for example, 2860 + ... + 20278.

It is an arithmetic number, because the mean of its divisors is an integer number (26339040).

Almost surely, 2^201520411 is an apocalyptic number.

201520411 is a deficient number, since it is larger than the sum of its proper divisors (9191909).

201520411 is a wasteful number, since it uses less digits than its factorization.

201520411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17945.

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 201520411 is about 14195.7884951841. The cubic root of 201520411 is about 586.2817111641.

Adding to 201520411 its reverse (114025102), we get a palindrome (315545513).

The spelling of 201520411 in words is "two hundred one million, five hundred twenty thousand, four hundred eleven".