21053098 has 16 divisors (see below), whose sum is σ = 34538400. Its totient is φ = 9545200.

The previous prime is 21053093. The next prime is 21053099. The reversal of 21053098 is 89035012.

It is not an unprimeable number, because it can be changed into a prime (21053093) 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, 9828 + ... + 11776.

It is an arithmetic number, because the mean of its divisors is an integer number (2158650).

Almost surely, 2^21053098 is an apocalyptic number.

21053098 is a deficient number, since it is larger than the sum of its proper divisors (13485302).

21053098 is a wasteful number, since it uses less digits than its factorization.

21053098 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2453.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 21053098 is about 4588.3655041856. The cubic root of 21053098 is about 276.1247510679.

The spelling of 21053098 in words is "twenty-one million, fifty-three thousand, ninety-eight".