55002142 has 16 divisors (see below), whose sum is σ = 90069840. Its totient is φ = 25036992.

The previous prime is 55002139. The next prime is 55002149. The reversal of 55002142 is 24120055.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55002149) 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, 12592 + ... + 16387.

It is an arithmetic number, because the mean of its divisors is an integer number (5629365).

Almost surely, 2^55002142 is an apocalyptic number.

55002142 is a deficient number, since it is larger than the sum of its proper divisors (35067698).

55002142 is a wasteful number, since it uses less digits than its factorization.

55002142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29067.

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

The square root of 55002142 is about 7416.3428993002. The cubic root of 55002142 is about 380.3001829358.

Adding to 55002142 its reverse (24120055), we get a palindrome (79122197).

The spelling of 55002142 in words is "fifty-five million, two thousand, one hundred forty-two".