55616442 has 16 divisors (see below), whose sum is σ = 127123392. Its totient is φ = 15890400.

The previous prime is 55616411. The next prime is 55616447. The reversal of 55616442 is 24461655.

55616442 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (55616447) 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 7 ways as a sum of consecutive naturals, for example, 662059 + ... + 662142.

It is an arithmetic number, because the mean of its divisors is an integer number (7945212).

Almost surely, 2^55616442 is an apocalyptic number.

55616442 is an abundant number, since it is smaller than the sum of its proper divisors (71506950).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55616442 is a wasteful number, since it uses less digits than its factorization.

55616442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1324213.

The product of its digits is 28800, while the sum is 33.

The square root of 55616442 is about 7457.6431933956. The cubic root of 55616442 is about 381.7107584520.

The spelling of 55616442 in words is "fifty-five million, six hundred sixteen thousand, four hundred forty-two".