55847620 has 24 divisors (see below), whose sum is σ = 121325400. Its totient is φ = 21568512.

The previous prime is 55847579. The next prime is 55847621. The reversal of 55847620 is 2674855.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 7739524 + 48108096 = 2782^2 + 6936^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 55847620.

It is not an unprimeable number, because it can be changed into a prime (55847621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47565 + ... + 48724.

It is an arithmetic number, because the mean of its divisors is an integer number (5055225).

Almost surely, 2^55847620 is an apocalyptic number.

It is an amenable number.

55847620 is an abundant number, since it is smaller than the sum of its proper divisors (65477780).

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

55847620 is a wasteful number, since it uses less digits than its factorization.

55847620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96327 (or 96325 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 37.

The square root of 55847620 is about 7473.1265210754. The cubic root of 55847620 is about 382.2389065013.

The spelling of 55847620 in words is "fifty-five million, eight hundred forty-seven thousand, six hundred twenty".