21610083 has 16 divisors (see below), whose sum is σ = 32103936. Its totient is φ = 12817440.

The previous prime is 21610081. The next prime is 21610091. The reversal of 21610083 is 38001612.

It is not a de Polignac number, because 21610083 - 2¹ = 21610081 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21610081) 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, 5416 + ... + 8517.

It is an arithmetic number, because the mean of its divisors is an integer number (2006496).

Almost surely, 2^21610083 is an apocalyptic number.

21610083 is a deficient number, since it is larger than the sum of its proper divisors (10493853).

21610083 is a wasteful number, since it uses less digits than its factorization.

21610083 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13994.

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 21610083 is about 4648.6646469712. The cubic root of 21610083 is about 278.5386576647.

Adding to 21610083 its reverse (38001612), we get a palindrome (59611695).

The spelling of 21610083 in words is "twenty-one million, six hundred ten thousand, eighty-three".