19072201 has 4 divisors (see below), whose sum is σ = 19257472. Its totient is φ = 18886932.

The previous prime is 19072189. The next prime is 19072211. The reversal of 19072201 is 10227091.

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 19072201 - 2⁷ = 19072073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19072211) 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, 92481 + ... + 92686.

It is an arithmetic number, because the mean of its divisors is an integer number (4814368).

Almost surely, 2^19072201 is an apocalyptic number.

It is an amenable number.

19072201 is a deficient number, since it is larger than the sum of its proper divisors (185271).

19072201 is a wasteful number, since it uses less digits than its factorization.

19072201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185270.

The product of its (nonzero) digits is 252, while the sum is 22.

The square root of 19072201 is about 4367.1731131248. The cubic root of 19072201 is about 267.1777398553.

Adding to 19072201 its reverse (10227091), we get a palindrome (29299292).

The spelling of 19072201 in words is "nineteen million, seventy-two thousand, two hundred one".