55211750 has 64 divisors (see below), whose sum is σ = 119486016. Its totient is φ = 18880000.

The previous prime is 55211731. The next prime is 55211809. The reversal of 55211750 is 5711255.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 46160 + ... + 47340.

It is an arithmetic number, because the mean of its divisors is an integer number (1866969).

Almost surely, 2^55211750 is an apocalyptic number.

55211750 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

55211750 is an abundant number, since it is smaller than the sum of its proper divisors (64274266).

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

55211750 is a wasteful number, since it uses less digits than its factorization.

55211750 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1226 (or 1216 counting only the distinct ones).

The product of its (nonzero) digits is 1750, while the sum is 26.

The square root of 55211750 is about 7430.4609547457. The cubic root of 55211750 is about 380.7826666530.

The spelling of 55211750 in words is "fifty-five million, two hundred eleven thousand, seven hundred fifty".