55387022 has 4 divisors (see below), whose sum is σ = 83080536. Its totient is φ = 27693510.

The previous prime is 55387021. The next prime is 55387027. The reversal of 55387022 is 22078355.

55387022 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 55387022.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55387021) 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 as a sum of consecutive naturals, namely, 13846754 + ... + 13846757.

It is an arithmetic number, because the mean of its divisors is an integer number (20770134).

Almost surely, 2^55387022 is an apocalyptic number.

55387022 is a deficient number, since it is larger than the sum of its proper divisors (27693514).

55387022 is a wasteful number, since it uses less digits than its factorization.

55387022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27693513.

The product of its (nonzero) digits is 16800, while the sum is 32.

The square root of 55387022 is about 7442.2457632088. The cubic root of 55387022 is about 381.1851778353.

The spelling of 55387022 in words is "fifty-five million, three hundred eighty-seven thousand, twenty-two".