55551201 has 4 divisors (see below), whose sum is σ = 74068272. Its totient is φ = 37034132.

The previous prime is 55551191. The next prime is 55551229. The reversal of 55551201 is 10215555.

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 55551201 - 2⁵ = 55551169 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (55551401) 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, 9258531 + ... + 9258536.

It is an arithmetic number, because the mean of its divisors is an integer number (18517068).

Almost surely, 2^55551201 is an apocalyptic number.

It is an amenable number.

55551201 is a deficient number, since it is larger than the sum of its proper divisors (18517071).

55551201 is a wasteful number, since it uses less digits than its factorization.

55551201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18517070.

The product of its (nonzero) digits is 1250, while the sum is 24.

The square root of 55551201 is about 7453.2678068080. The cubic root of 55551201 is about 381.5614444804.

Adding to 55551201 its reverse (10215555), we get a palindrome (65766756).

The spelling of 55551201 in words is "fifty-five million, five hundred fifty-one thousand, two hundred one".