55213142 has 16 divisors (see below), whose sum is σ = 85428000. Its totient is φ = 26746560.

The previous prime is 55213141. The next prime is 55213157. The reversal of 55213142 is 24131255.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55213141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9959 + ... + 14477.

It is an arithmetic number, because the mean of its divisors is an integer number (5339250).

Almost surely, 2^55213142 is an apocalyptic number.

55213142 is a deficient number, since it is larger than the sum of its proper divisors (30214858).

55213142 is a wasteful number, since it uses less digits than its factorization.

55213142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4711.

The product of its digits is 1200, while the sum is 23.

The square root of 55213142 is about 7430.5546226375. The cubic root of 55213142 is about 380.7858667268.

Adding to 55213142 its reverse (24131255), we get a palindrome (79344397).

It can be divided in two parts, 55213 and 142, that added together give a palindrome (55355).

The spelling of 55213142 in words is "fifty-five million, two hundred thirteen thousand, one hundred forty-two".