21094054 has 4 divisors (see below), whose sum is σ = 31641084. Its totient is φ = 10547026.

The previous prime is 21094019. The next prime is 21094057. The reversal of 21094054 is 45049012.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×21094054² = 889918228309832, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21094057) by changing a digit.

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 as a sum of consecutive naturals, namely, 5273512 + ... + 5273515.

It is an arithmetic number, because the mean of its divisors is an integer number (7910271).

Almost surely, 2^21094054 is an apocalyptic number.

21094054 is a deficient number, since it is larger than the sum of its proper divisors (10547030).

21094054 is a wasteful number, since it uses less digits than its factorization.

21094054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10547029.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 21094054 is about 4592.8263629273. The cubic root of 21094054 is about 276.3036897346.

The spelling of 21094054 in words is "twenty-one million, ninety-four thousand, fifty-four".