21610150 has 12 divisors (see below), whose sum is σ = 40194972. Its totient is φ = 8644040.

The previous prime is 21610103. The next prime is 21610151. The reversal of 21610150 is 5101612.

It is a happy 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 5 ways as a sum of consecutive naturals, for example, 216052 + ... + 216151.

It is an arithmetic number, because the mean of its divisors is an integer number (3349581).

Almost surely, 2^21610150 is an apocalyptic number.

21610150 is a deficient number, since it is larger than the sum of its proper divisors (18584822).

21610150 is a wasteful number, since it uses less digits than its factorization.

21610150 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 432215 (or 432210 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 16.

The square root of 21610150 is about 4648.6718533362. The cubic root of 21610150 is about 278.5389455252.

Adding to 21610150 its reverse (5101612), we get a palindrome (26711762).

The spelling of 21610150 in words is "twenty-one million, six hundred ten thousand, one hundred fifty".