21950054 has 32 divisors (see below), whose sum is σ = 39916800. Its totient is φ = 8843040.

The previous prime is 21950053. The next prime is 21950099. The reversal of 21950054 is 45005912.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21950053) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47384 + ... + 47844.

It is an arithmetic number, because the mean of its divisors is an integer number (1247400).

Almost surely, 2^21950054 is an apocalyptic number.

21950054 is a deficient number, since it is larger than the sum of its proper divisors (17966746).

21950054 is a wasteful number, since it uses less digits than its factorization.

21950054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 668.

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 21950054 is about 4685.0884730173. The cubic root of 21950054 is about 279.9917259460.

Adding to 21950054 its reverse (45005912), we get a palindrome (66955966).

The spelling of 21950054 in words is "twenty-one million, nine hundred fifty thousand, fifty-four".