201672401 has 4 divisors (see below), whose sum is σ = 230482752. Its totient is φ = 172862052.

The previous prime is 201672379. The next prime is 201672407. The reversal of 201672401 is 104276102.

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.

It is a cyclic number.

It is not a de Polignac number, because 201672401 - 2⁶ = 201672337 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (201672407) 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 in 3 ways as a sum of consecutive naturals, for example, 14405165 + ... + 14405178.

It is an arithmetic number, because the mean of its divisors is an integer number (57620688).

Almost surely, 2^201672401 is an apocalyptic number.

It is an amenable number.

201672401 is a deficient number, since it is larger than the sum of its proper divisors (28810351).

201672401 is an equidigital number, since it uses as much as digits as its factorization.

201672401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28810350.

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 201672401 is about 14201.1408344541. The cubic root of 201672401 is about 586.4290685521.

The spelling of 201672401 in words is "two hundred one million, six hundred seventy-two thousand, four hundred one".