21610141 has 8 divisors (see below), whose sum is σ = 24802560. Its totient is φ = 18444048.

The previous prime is 21610103. The next prime is 21610151. The reversal of 21610141 is 14101612.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21610141 - 2¹³ = 21601949 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21610151) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4786 + ... + 8131.

It is an arithmetic number, because the mean of its divisors is an integer number (3100320).

Almost surely, 2^21610141 is an apocalyptic number.

It is an amenable number.

21610141 is a deficient number, since it is larger than the sum of its proper divisors (3192419).

21610141 is a wasteful number, since it uses less digits than its factorization.

21610141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13163.

The product of its (nonzero) digits is 48, while the sum is 16.

The square root of 21610141 is about 4648.6708853177. The cubic root of 21610141 is about 278.5389068574.

Adding to 21610141 its reverse (14101612), we get a palindrome (35711753).

The spelling of 21610141 in words is "twenty-one million, six hundred ten thousand, one hundred forty-one".