55878554 has 16 divisors (see below), whose sum is σ = 86760960. Its totient is φ = 26963280.

The previous prime is 55878539. The next prime is 55878583. The reversal of 55878554 is 45587855.

It is a happy number.

55878554 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 55878499 and 55878508.

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, 26192 + ... + 28244.

It is an arithmetic number, because the mean of its divisors is an integer number (5422560).

Almost surely, 2^55878554 is an apocalyptic number.

55878554 is a deficient number, since it is larger than the sum of its proper divisors (30882406).

55878554 is a wasteful number, since it uses less digits than its factorization.

55878554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2525.

The product of its digits is 1120000, while the sum is 47.

The square root of 55878554 is about 7475.1959171650. The cubic root of 55878554 is about 382.3094675260.

It can be divided in two parts, 5587 and 8554, that added together give a palindrome (14141).

The spelling of 55878554 in words is "fifty-five million, eight hundred seventy-eight thousand, five hundred fifty-four".