21350054 has 8 divisors (see below), whose sum is σ = 34936488. Its totient is φ = 9704560.

The previous prime is 21350039. The next prime is 21350071. The reversal of 21350054 is 45005312.

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, 485207 + ... + 485250.

It is an arithmetic number, because the mean of its divisors is an integer number (4367061).

Almost surely, 2^21350054 is an apocalyptic number.

21350054 is a deficient number, since it is larger than the sum of its proper divisors (13586434).

21350054 is a wasteful number, since it uses less digits than its factorization.

21350054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 970470.

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 21350054 is about 4620.6118642448. The cubic root of 21350054 is about 277.4169499600.

Adding to 21350054 its reverse (45005312), we get a palindrome (66355366).

The spelling of 21350054 in words is "twenty-one million, three hundred fifty thousand, fifty-four".