55272201 has 4 divisors (see below), whose sum is σ = 73696272. Its totient is φ = 36848132.

The previous prime is 55272199. The next prime is 55272221. The reversal of 55272201 is 10227255.

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 55272201 - 2¹ = 55272199 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (55272221) 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, 9212031 + ... + 9212036.

It is an arithmetic number, because the mean of its divisors is an integer number (18424068).

Almost surely, 2^55272201 is an apocalyptic number.

It is an amenable number.

55272201 is a deficient number, since it is larger than the sum of its proper divisors (18424071).

55272201 is a wasteful number, since it uses less digits than its factorization.

55272201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18424070.

The product of its (nonzero) digits is 1400, while the sum is 24.

The square root of 55272201 is about 7434.5276245367. The cubic root of 55272201 is about 380.9215881512.

Adding to 55272201 its reverse (10227255), we get a palindrome (65499456).

The spelling of 55272201 in words is "fifty-five million, two hundred seventy-two thousand, two hundred one".