55847442 has 16 divisors (see below), whose sum is σ = 127651392. Its totient is φ = 15956400.

The previous prime is 55847423. The next prime is 55847443. The reversal of 55847442 is 24474855.

It is a self number, because there is not a number n which added to its sum of digits gives 55847442.

It is not an unprimeable number, because it can be changed into a prime (55847443) 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, 664809 + ... + 664892.

It is an arithmetic number, because the mean of its divisors is an integer number (7978212).

Almost surely, 2^55847442 is an apocalyptic number.

55847442 is an abundant number, since it is smaller than the sum of its proper divisors (71803950).

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

55847442 is a wasteful number, since it uses less digits than its factorization.

55847442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1329713.

The product of its digits is 179200, while the sum is 39.

The square root of 55847442 is about 7473.1146117265. The cubic root of 55847442 is about 382.2385004047.

The spelling of 55847442 in words is "fifty-five million, eight hundred forty-seven thousand, four hundred forty-two".