21046054 has 8 divisors (see below), whose sum is σ = 32657760. Its totient is φ = 10160136.

The previous prime is 21046027. The next prime is 21046073. The reversal of 21046054 is 45064012.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 181374 + ... + 181489.

It is an arithmetic number, because the mean of its divisors is an integer number (4082220).

Almost surely, 2^21046054 is an apocalyptic number.

21046054 is a deficient number, since it is larger than the sum of its proper divisors (11611706).

21046054 is a wasteful number, since it uses less digits than its factorization.

21046054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 362894.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 21046054 is about 4587.5978463680. The cubic root of 21046054 is about 276.0939521215.

It can be divided in two parts, 210 and 46054, that added together give a palindrome (46264).

The spelling of 21046054 in words is "twenty-one million, forty-six thousand, fifty-four".