55117750 has 16 divisors (see below), whose sum is σ = 103180896. Its totient is φ = 22047000.

The previous prime is 55117739. The next prime is 55117759. The reversal of 55117750 is 5771155.

55117750 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 not an unprimeable number, because it can be changed into a prime (55117759) 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 7 ways as a sum of consecutive naturals, for example, 109986 + ... + 110485.

It is an arithmetic number, because the mean of its divisors is an integer number (6448806).

Almost surely, 2^55117750 is an apocalyptic number.

55117750 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

55117750 is a deficient number, since it is larger than the sum of its proper divisors (48063146).

55117750 is a wasteful number, since it uses less digits than its factorization.

55117750 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220488 (or 220478 counting only the distinct ones).

The product of its (nonzero) digits is 6125, while the sum is 31.

The square root of 55117750 is about 7424.1329460079. The cubic root of 55117750 is about 380.5664451471.

The spelling of 55117750 in words is "fifty-five million, one hundred seventeen thousand, seven hundred fifty".