21083153 has 16 divisors (see below), whose sum is σ = 26105856. Its totient is φ = 16580160.

The previous prime is 21083147. The next prime is 21083159. The reversal of 21083153 is 35138012.

It is an interprime number because it is at equal distance from previous prime (21083147) and next prime (21083159).

It is a cyclic number.

It is not a de Polignac number, because 21083153 - 2¹⁴ = 21066769 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21083159) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16775 + ... + 17987.

It is an arithmetic number, because the mean of its divisors is an integer number (1631616).

Almost surely, 2^21083153 is an apocalyptic number.

It is an amenable number.

21083153 is a deficient number, since it is larger than the sum of its proper divisors (5022703).

21083153 is a wasteful number, since it uses less digits than its factorization.

21083153 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1424.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 21083153 is about 4591.6394675540. The cubic root of 21083153 is about 276.2560853952.

The spelling of 21083153 in words is "twenty-one million, eighty-three thousand, one hundred fifty-three".