21465054 has 32 divisors (see below), whose sum is σ = 51371040. Its totient is φ = 6604416.

The previous prime is 21465029. The next prime is 21465061. The reversal of 21465054 is 45056412.

21465054 is a `hidden beast` number, since 2 + 1 + 4 + 650 + 5 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14587 + ... + 15990.

It is an arithmetic number, because the mean of its divisors is an integer number (1605345).

Almost surely, 2^21465054 is an apocalyptic number.

21465054 is an abundant number, since it is smaller than the sum of its proper divisors (29905986).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21465054 is a wasteful number, since it uses less digits than its factorization.

21465054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30601 (or 30595 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 21465054 is about 4633.0393911557. The cubic root of 21465054 is about 277.9141515022.

The spelling of 21465054 in words is "twenty-one million, four hundred sixty-five thousand, fifty-four".