21074053 has 32 divisors (see below), whose sum is σ = 29111040. Its totient is φ = 14722560.

The previous prime is 21074051. The next prime is 21074057. The reversal of 21074053 is 35047012.

It is a cyclic number.

It is not a de Polignac number, because 21074053 - 2¹ = 21074051 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21074051) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 36753 + ... + 37321.

It is an arithmetic number, because the mean of its divisors is an integer number (909720).

Almost surely, 2^21074053 is an apocalyptic number.

It is an amenable number.

21074053 is a deficient number, since it is larger than the sum of its proper divisors (8036987).

21074053 is a wasteful number, since it uses less digits than its factorization.

21074053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 637.

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 21074053 is about 4590.6484291438. The cubic root of 21074053 is about 276.2163334005.

The spelling of 21074053 in words is "twenty-one million, seventy-four thousand, fifty-three".