55438370 has 32 divisors (see below), whose sum is σ = 107956800. Its totient is φ = 20376000.

The previous prime is 55438363. The next prime is 55438373. The reversal of 55438370 is 7383455.

55438370 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 55438370.

It is not an unprimeable number, because it can be changed into a prime (55438373) 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 15 ways as a sum of consecutive naturals, for example, 31781 + ... + 33479.

It is an arithmetic number, because the mean of its divisors is an integer number (3373650).

Almost surely, 2^55438370 is an apocalyptic number.

55438370 is a deficient number, since it is larger than the sum of its proper divisors (52518430).

55438370 is a wasteful number, since it uses less digits than its factorization.

55438370 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1970.

The product of its (nonzero) digits is 50400, while the sum is 35.

The square root of 55438370 is about 7445.6947291707. The cubic root of 55438370 is about 381.3029373773.

The spelling of 55438370 in words is "fifty-five million, four hundred thirty-eight thousand, three hundred seventy".