55861442 has 32 divisors (see below), whose sum is σ = 106466304. Its totient is φ = 21384000.

The previous prime is 55861409. The next prime is 55861447. The reversal of 55861442 is 24416855.

It is not an unprimeable number, because it can be changed into a prime (55861447) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 692 + ... + 10592.

It is an arithmetic number, because the mean of its divisors is an integer number (3327072).

Almost surely, 2^55861442 is an apocalyptic number.

55861442 is a deficient number, since it is larger than the sum of its proper divisors (50604862).

55861442 is a wasteful number, since it uses less digits than its factorization.

55861442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9954.

The product of its digits is 38400, while the sum is 35.

The square root of 55861442 is about 7474.0512441379. The cubic root of 55861442 is about 382.2704379576.

The spelling of 55861442 in words is "fifty-five million, eight hundred sixty-one thousand, four hundred forty-two".