55542201 has 16 divisors (see below), whose sum is σ = 87003840. Its totient is φ = 31072320.

The previous prime is 55542199. The next prime is 55542211. The reversal of 55542201 is 10224555.

It is a happy number.

It is not a de Polignac number, because 55542201 - 2¹ = 55542199 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (55542211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64306 + ... + 65163.

It is an arithmetic number, because the mean of its divisors is an integer number (5437740).

Almost surely, 2^55542201 is an apocalyptic number.

It is an amenable number.

55542201 is a deficient number, since it is larger than the sum of its proper divisors (31461639).

55542201 is a wasteful number, since it uses less digits than its factorization.

55542201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129496.

The product of its (nonzero) digits is 2000, while the sum is 24.

The square root of 55542201 is about 7452.6640203353. The cubic root of 55542201 is about 381.5408374344.

Adding to 55542201 its reverse (10224555), we get a palindrome (65766756).

The spelling of 55542201 in words is "fifty-five million, five hundred forty-two thousand, two hundred one".