55780750 has 64 divisors (see below), whose sum is σ = 111196800. Its totient is φ = 20908800.

The previous prime is 55780741. The next prime is 55780771. The reversal of 55780750 is 5708755.

55780750 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×55780750² = 6222984141125000, which contains 22 as substring.

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 31 ways as a sum of consecutive naturals, for example, 511696 + ... + 511804.

It is an arithmetic number, because the mean of its divisors is an integer number (1737450).

Almost surely, 2^55780750 is an apocalyptic number.

55780750 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

55780750 is a deficient number, since it is larger than the sum of its proper divisors (55416050).

55780750 is a wasteful number, since it uses less digits than its factorization.

55780750 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238 (or 228 counting only the distinct ones).

The product of its (nonzero) digits is 49000, while the sum is 37.

The square root of 55780750 is about 7468.6511499735. The cubic root of 55780750 is about 382.0862857084.

The spelling of 55780750 in words is "fifty-five million, seven hundred eighty thousand, seven hundred fifty".