21325762 has 4 divisors (see below), whose sum is σ = 31988646. Its totient is φ = 10662880.

The previous prime is 21325757. The next prime is 21325819. The reversal of 21325762 is 26752312.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 20421361 + 904401 = 4519^2 + 951^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 21325762.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5331439 + ... + 5331442.

Almost surely, 2^21325762 is an apocalyptic number.

21325762 is a deficient number, since it is larger than the sum of its proper divisors (10662884).

21325762 is a wasteful number, since it uses less digits than its factorization.

21325762 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10662883.

The product of its digits is 5040, while the sum is 28.

The square root of 21325762 is about 4617.9824599061. The cubic root of 21325762 is about 277.3116954246.

The spelling of 21325762 in words is "twenty-one million, three hundred twenty-five thousand, seven hundred sixty-two".