55878955 has 8 divisors (see below), whose sum is σ = 73150704. Its totient is φ = 40639200.

The previous prime is 55878947. The next prime is 55878997. The reversal of 55878955 is 55987855.

55878955 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 55878955 - 2³ = 55878947 is a prime.

It is a super-2 number, since 2×55878955² = 6244915223784050, which contains 22 as substring.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 507936 + ... + 508045.

It is an arithmetic number, because the mean of its divisors is an integer number (9143838).

Almost surely, 2^55878955 is an apocalyptic number.

55878955 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

55878955 is a deficient number, since it is larger than the sum of its proper divisors (17271749).

55878955 is a wasteful number, since it uses less digits than its factorization.

55878955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1015997.

The product of its digits is 2520000, while the sum is 52.

The square root of 55878955 is about 7475.2227391563. Note that the first 3 decimals coincide. The cubic root of 55878955 is about 382.3103820434.

Subtracting 55878955 from its reverse (55987855), we obtain a square (108900 = 330²).

The spelling of 55878955 in words is "fifty-five million, eight hundred seventy-eight thousand, nine hundred fifty-five".