55655642 has 16 divisors (see below), whose sum is σ = 95521920. Its totient is φ = 23824368.

The previous prime is 55655623. The next prime is 55655647. The reversal of 55655642 is 24655655.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 55655596 and 55655605.

It is not an unprimeable number, because it can be changed into a prime (55655647) 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, 13859 + ... + 17417.

It is an arithmetic number, because the mean of its divisors is an integer number (5970120).

Almost surely, 2^55655642 is an apocalyptic number.

55655642 is a deficient number, since it is larger than the sum of its proper divisors (39866278).

55655642 is a wasteful number, since it uses less digits than its factorization.

55655642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4685.

The product of its digits is 180000, while the sum is 38.

The square root of 55655642 is about 7460.2709066092. The cubic root of 55655642 is about 381.8004174756.

The spelling of 55655642 in words is "fifty-five million, six hundred fifty-five thousand, six hundred forty-two".