55277500 has 30 divisors (see below), whose sum is σ = 120886304. Its totient is φ = 22110000.

The previous prime is 55277491. The next prime is 55277531. The reversal of 55277500 is 577255.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 8556 + ... + 13555.

Almost surely, 2^55277500 is an apocalyptic number.

55277500 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

55277500 is an abundant number, since it is smaller than the sum of its proper divisors (65608804).

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

55277500 is a wasteful number, since it uses less digits than its factorization.

55277500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22135 (or 22118 counting only the distinct ones).

The product of its (nonzero) digits is 12250, while the sum is 31.

The square root of 55277500 is about 7434.8839937150. The cubic root of 55277500 is about 380.9337608707.

The spelling of 55277500 in words is "fifty-five million, two hundred seventy-seven thousand, five hundred".