4275621 has 12 divisors (see below), whose sum is σ = 7058272. Its totient is φ = 2443176.

The previous prime is 4275617. The next prime is 4275641. The reversal of 4275621 is 1265724.

It is not a de Polignac number, because 4275621 - 2² = 4275617 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4275611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33871 + ... + 33996.

Almost surely, 2^4275621 is an apocalyptic number.

It is an amenable number.

4275621 is a deficient number, since it is larger than the sum of its proper divisors (2782651).

4275621 is a wasteful number, since it uses less digits than its factorization.

4275621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67880 (or 67877 counting only the distinct ones).

The product of its digits is 3360, while the sum is 27.

The square root of 4275621 is about 2067.7574809440. The cubic root of 4275621 is about 162.3054365676.

It can be divided in two parts, 4 and 275621, that added together give a square (275625 = 525²).

The spelling of 4275621 in words is "four million, two hundred seventy-five thousand, six hundred twenty-one".