21359153 has 2 divisors, whose sum is σ = 21359154. Its totient is φ = 21359152.

The previous prime is 21359141. The next prime is 21359183. The reversal of 21359153 is 35195312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13162384 + 8196769 = 3628^2 + 2863^2 .

It is a cyclic number.

It is not a de Polignac number, because 21359153 - 2¹² = 21355057 is a prime.

It is not a weakly prime, because it can be changed into another prime (21359113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10679576 + 10679577.

It is an arithmetic number, because the mean of its divisors is an integer number (10679577).

Almost surely, 2^21359153 is an apocalyptic number.

It is an amenable number.

21359153 is a deficient number, since it is larger than the sum of its proper divisors (1).

21359153 is an equidigital number, since it uses as much as digits as its factorization.

21359153 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4050, while the sum is 29.

The square root of 21359153 is about 4621.5963692214. The cubic root of 21359153 is about 277.4563543618.

It can be divided in two parts, 21359 and 153, that added together give a palindrome (21512).

The spelling of 21359153 in words is "twenty-one million, three hundred fifty-nine thousand, one hundred fifty-three".