21475102 has 16 divisors (see below), whose sum is σ = 35248752. Its totient is φ = 9731520.

The previous prime is 21475079. The next prime is 21475127. The reversal of 21475102 is 20157412.

It is a happy number.

It is a super-2 number, since 2×21475102² = 922360011820808, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6898 + ... + 9514.

It is an arithmetic number, because the mean of its divisors is an integer number (2203047).

Almost surely, 2^21475102 is an apocalyptic number.

21475102 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21475102 is a deficient number, since it is larger than the sum of its proper divisors (13773650).

21475102 is a wasteful number, since it uses less digits than its factorization.

21475102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3003.

The product of its (nonzero) digits is 560, while the sum is 22.

The square root of 21475102 is about 4634.1236496235. The cubic root of 21475102 is about 277.9575095075.

The spelling of 21475102 in words is "twenty-one million, four hundred seventy-five thousand, one hundred two".