55164142 has 12 divisors (see below), whose sum is σ = 90952848. Its totient is φ = 25074500.

The previous prime is 55164139. The next prime is 55164169. The reversal of 55164142 is 24146155.

It is a plaindrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 55164142.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 113734 + ... + 114217.

It is an arithmetic number, because the mean of its divisors is an integer number (7579404).

Almost surely, 2^55164142 is an apocalyptic number.

55164142 is a deficient number, since it is larger than the sum of its proper divisors (35788706).

55164142 is a wasteful number, since it uses less digits than its factorization.

55164142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227975 (or 227964 counting only the distinct ones).

The product of its digits is 4800, while the sum is 28.

The square root of 55164142 is about 7427.2566940964. The cubic root of 55164142 is about 380.6731880592.

The spelling of 55164142 in words is "fifty-five million, one hundred sixty-four thousand, one hundred forty-two".