55077500 has 30 divisors (see below), whose sum is σ = 120448944. Its totient is φ = 22030000.

The previous prime is 55077431. The next prime is 55077511. The reversal of 55077500 is 577055.

55077500 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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 9 ways as a sum of consecutive naturals, for example, 8516 + ... + 13515.

Almost surely, 2^55077500 is an apocalyptic number.

55077500 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

55077500 is an abundant number, since it is smaller than the sum of its proper divisors (65371444).

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

55077500 is a wasteful number, since it uses less digits than its factorization.

55077500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22055 (or 22038 counting only the distinct ones).

The product of its (nonzero) digits is 6125, while the sum is 29.

The square root of 55077500 is about 7421.4216966832. The cubic root of 55077500 is about 380.4737857675.

The spelling of 55077500 in words is "fifty-five million, seventy-seven thousand, five hundred".