55042136 has 8 divisors (see below), whose sum is σ = 103204020. Its totient is φ = 27521064.

The previous prime is 55042133. The next prime is 55042147. The reversal of 55042136 is 63124055.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55042133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3440126 + ... + 3440141.

Almost surely, 2^55042136 is an apocalyptic number.

It is an amenable number.

55042136 is a deficient number, since it is larger than the sum of its proper divisors (48161884).

55042136 is a wasteful number, since it uses less digits than its factorization.

55042136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6880273 (or 6880269 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 55042136 is about 7419.0387517521. The cubic root of 55042136 is about 380.3923371680.

The spelling of 55042136 in words is "fifty-five million, forty-two thousand, one hundred thirty-six".