16275021 has 16 divisors (see below), whose sum is σ = 25035264. Its totient is φ = 9211824.

The previous prime is 16275013. The next prime is 16275029. The reversal of 16275021 is 12057261.

It is an interprime number because it is at equal distance from previous prime (16275013) and next prime (16275029).

It is not a de Polignac number, because 16275021 - 2³ = 16275013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16274982 and 16275000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16275029) 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 15 ways as a sum of consecutive naturals, for example, 1375 + ... + 5868.

It is an arithmetic number, because the mean of its divisors is an integer number (1564704).

Almost surely, 2^16275021 is an apocalyptic number.

It is an amenable number.

16275021 is a deficient number, since it is larger than the sum of its proper divisors (8760243).

16275021 is a wasteful number, since it uses less digits than its factorization.

16275021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7360.

The product of its (nonzero) digits is 840, while the sum is 24.

The square root of 16275021 is about 4034.2311535161. The cubic root of 16275021 is about 253.4197856294.

The spelling of 16275021 in words is "sixteen million, two hundred seventy-five thousand, twenty-one".