55637642 has 8 divisors (see below), whose sum is σ = 83492100. Its totient is φ = 27806944.

The previous prime is 55637641. The next prime is 55637663. The reversal of 55637642 is 24673655.

55637642 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 55636681 + 961 = 7459^2 + 31^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 55637596 and 55637605.

It is not an unprimeable number, because it can be changed into a prime (55637641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2084 + ... + 10752.

Almost surely, 2^55637642 is an apocalyptic number.

55637642 is a deficient number, since it is larger than the sum of its proper divisors (27854458).

55637642 is a wasteful number, since it uses less digits than its factorization.

55637642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11880.

The product of its digits is 151200, while the sum is 38.

The square root of 55637642 is about 7459.0644185447. The cubic root of 55637642 is about 381.7592527450.

The spelling of 55637642 in words is "fifty-five million, six hundred thirty-seven thousand, six hundred forty-two".