21952054 has 8 divisors (see below), whose sum is σ = 33138288. Its totient is φ = 10905960.

The previous prime is 21952033. The next prime is 21952057. The reversal of 21952054 is 45025912.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21952057) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34642 + ... + 35269.

It is an arithmetic number, because the mean of its divisors is an integer number (4142286).

Almost surely, 2^21952054 is an apocalyptic number.

21952054 is a deficient number, since it is larger than the sum of its proper divisors (11186234).

21952054 is a wasteful number, since it uses less digits than its factorization.

21952054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70070.

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 21952054 is about 4685.3019112966. The cubic root of 21952054 is about 280.0002295916. Note that the first 3 decimals are identical.

Adding to 21952054 its reverse (45025912), we get a palindrome (66977966).

The spelling of 21952054 in words is "twenty-one million, nine hundred fifty-two thousand, fifty-four".