21037162 has 4 divisors (see below), whose sum is σ = 31555746. Its totient is φ = 10518580.

The previous prime is 21037139. The next prime is 21037171. The reversal of 21037162 is 26173012.

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., 13535041 + 7502121 = 3679^2 + 2739^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5259289 + ... + 5259292.

Almost surely, 2^21037162 is an apocalyptic number.

21037162 is a deficient number, since it is larger than the sum of its proper divisors (10518584).

21037162 is a wasteful number, since it uses less digits than its factorization.

21037162 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10518583.

The product of its (nonzero) digits is 504, while the sum is 22.

The square root of 21037162 is about 4586.6286093382. The cubic root of 21037162 is about 276.0550632280.

The spelling of 21037162 in words is "twenty-one million, thirty-seven thousand, one hundred sixty-two".