21141055 has 24 divisors (see below), whose sum is σ = 27827712. Its totient is φ = 15410304.

The previous prime is 21141041. The next prime is 21141061. The reversal of 21141055 is 55014112.

It is not a de Polignac number, because 21141055 - 2¹³ = 21132863 is a prime.

It is a Duffinian number.

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 23 ways as a sum of consecutive naturals, for example, 107217 + ... + 107413.

It is an arithmetic number, because the mean of its divisors is an integer number (1159488).

Almost surely, 2^21141055 is an apocalyptic number.

21141055 is a deficient number, since it is larger than the sum of its proper divisors (6686657).

21141055 is a wasteful number, since it uses less digits than its factorization.

21141055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 355 (or 342 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 19.

The square root of 21141055 is about 4597.9402997429. The cubic root of 21141055 is about 276.5087540978.

Adding to 21141055 its reverse (55014112), we get a palindrome (76155167).

The spelling of 21141055 in words is "twenty-one million, one hundred forty-one thousand, fifty-five".