21883755 has 16 divisors (see below), whose sum is σ = 35076384. Its totient is φ = 11650560.

The previous prime is 21883723. The next prime is 21883793. The reversal of 21883755 is 55738812.

It is not a de Polignac number, because 21883755 - 2⁵ = 21883723 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11427 + ... + 13203.

It is an arithmetic number, because the mean of its divisors is an integer number (2192274).

Almost surely, 2^21883755 is an apocalyptic number.

21883755 is a deficient number, since it is larger than the sum of its proper divisors (13192629).

21883755 is a wasteful number, since it uses less digits than its factorization.

21883755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2606.

The product of its digits is 67200, while the sum is 39.

The square root of 21883755 is about 4678.0075887070. The cubic root of 21883755 is about 279.7095414836.

The spelling of 21883755 in words is "twenty-one million, eight hundred eighty-three thousand, seven hundred fifty-five".