55200142 has 4 divisors (see below), whose sum is σ = 82800216. Its totient is φ = 27600070.

The previous prime is 55200127. The next prime is 55200143. The reversal of 55200142 is 24100255.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24100255 = 5 ⋅4820051.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55200143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13800034 + ... + 13800037.

It is an arithmetic number, because the mean of its divisors is an integer number (20700054).

Almost surely, 2^55200142 is an apocalyptic number.

55200142 is a deficient number, since it is larger than the sum of its proper divisors (27600074).

55200142 is a wasteful number, since it uses less digits than its factorization.

55200142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27600073.

The product of its (nonzero) digits is 400, while the sum is 19.

The square root of 55200142 is about 7429.6798046753. The cubic root of 55200142 is about 380.7559788858.

Adding to 55200142 its reverse (24100255), we get a palindrome (79300397).

The spelling of 55200142 in words is "fifty-five million, two hundred thousand, one hundred forty-two".