55221050 has 24 divisors (see below), whose sum is σ = 104457600. Its totient is φ = 21712880.

The previous prime is 55221041. The next prime is 55221059. The reversal of 55221050 is 5012255.

It is an interprime number because it is at equal distance from previous prime (55221041) and next prime (55221059).

It is not an unprimeable number, because it can be changed into a prime (55221059) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6410 + ... + 12309.

It is an arithmetic number, because the mean of its divisors is an integer number (4352400).

Almost surely, 2^55221050 is an apocalyptic number.

55221050 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

55221050 is a deficient number, since it is larger than the sum of its proper divisors (49236550).

55221050 is a wasteful number, since it uses less digits than its factorization.

55221050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18790 (or 18785 counting only the distinct ones).

The product of its (nonzero) digits is 500, while the sum is 20.

The square root of 55221050 is about 7431.0867307548. The cubic root of 55221050 is about 380.8040454355.

The spelling of 55221050 in words is "fifty-five million, two hundred twenty-one thousand, fifty".