55142012 has 12 divisors (see below), whose sum is σ = 97032936. Its totient is φ = 27418320.

The previous prime is 55141993. The next prime is 55142023. The reversal of 55142012 is 21024155.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37358 + ... + 38805.

It is an arithmetic number, because the mean of its divisors is an integer number (8086078).

Almost surely, 2^55142012 is an apocalyptic number.

It is an amenable number.

55142012 is a deficient number, since it is larger than the sum of its proper divisors (41890924).

55142012 is a wasteful number, since it uses less digits than its factorization.

55142012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76348 (or 76346 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 55142012 is about 7425.7667617560. The cubic root of 55142012 is about 380.6222768204.

Adding to 55142012 its reverse (21024155), we get a palindrome (76166167).

The spelling of 55142012 in words is "fifty-five million, one hundred forty-two thousand, twelve".