21054014 has 16 divisors (see below), whose sum is σ = 33464400. Its totient is φ = 9906624.

The previous prime is 21053987. The next prime is 21054017. The reversal of 21054014 is 41045012.

It is a junction number, because it is equal to n+sod(n) for n = 21053983 and 21054001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21054017) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4202 + ... + 7730.

It is an arithmetic number, because the mean of its divisors is an integer number (2091525).

Almost surely, 2^21054014 is an apocalyptic number.

21054014 is a deficient number, since it is larger than the sum of its proper divisors (12410386).

21054014 is a wasteful number, since it uses less digits than its factorization.

21054014 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3707.

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 21054014 is about 4588.4653207799. The cubic root of 21054014 is about 276.1287556504.

Adding to 21054014 its reverse (41045012), we get a palindrome (62099026).

It can be divided in two parts, 2105401 and 4, that multiplied together give a square (8421604 = 2902²).

The spelling of 21054014 in words is "twenty-one million, fifty-four thousand, fourteen".