21474061 has 8 divisors (see below), whose sum is σ = 24598080. Its totient is φ = 18364128.

The previous prime is 21474059. The next prime is 21474067. The reversal of 21474061 is 16047412.

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

It is a cyclic number.

It is not a de Polignac number, because 21474061 - 2¹ = 21474059 is a prime.

It is a super-2 number, since 2×21474061² = 922270591663442, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21474067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16 + ... + 6553.

It is an arithmetic number, because the mean of its divisors is an integer number (3074760).

Almost surely, 2^21474061 is an apocalyptic number.

It is an amenable number.

21474061 is a deficient number, since it is larger than the sum of its proper divisors (3124019).

21474061 is an equidigital number, since it uses as much as digits as its factorization.

21474061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7043.

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 21474061 is about 4634.0113292913. The cubic root of 21474061 is about 277.9530181289.

The spelling of 21474061 in words is "twenty-one million, four hundred seventy-four thousand, sixty-one".