21462353 has 4 divisors (see below), whose sum is σ = 23413488. Its totient is φ = 19511220.

The previous prime is 21462319. The next prime is 21462359. The reversal of 21462353 is 35326412.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 21462353 - 2¹⁰ = 21461329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21462359) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 975551 + ... + 975572.

It is an arithmetic number, because the mean of its divisors is an integer number (5853372).

Almost surely, 2^21462353 is an apocalyptic number.

It is an amenable number.

21462353 is a deficient number, since it is larger than the sum of its proper divisors (1951135).

21462353 is a wasteful number, since it uses less digits than its factorization.

21462353 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1951134.

The product of its digits is 4320, while the sum is 26.

The square root of 21462353 is about 4632.7478886726. The cubic root of 21462353 is about 277.9024941418.

Adding to 21462353 its reverse (35326412), we get a palindrome (56788765).

The spelling of 21462353 in words is "twenty-one million, four hundred sixty-two thousand, three hundred fifty-three".