21541094 has 8 divisors (see below), whose sum is σ = 33354048. Its totient is φ = 10423080.

The previous prime is 21541061. The next prime is 21541097. The reversal of 21541094 is 49014512.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21541097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 173657 + ... + 173780.

It is an arithmetic number, because the mean of its divisors is an integer number (4169256).

Almost surely, 2^21541094 is an apocalyptic number.

21541094 is a deficient number, since it is larger than the sum of its proper divisors (11812954).

21541094 is a wasteful number, since it uses less digits than its factorization.

21541094 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 347470.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 21541094 is about 4641.2384123206. The cubic root of 21541094 is about 278.2419352414.

The spelling of 21541094 in words is "twenty-one million, five hundred forty-one thousand, ninety-four".