40275621 has 6 divisors (see below), whose sum is σ = 58175910. Its totient is φ = 26850408.

The previous prime is 40275607. The next prime is 40275623. The reversal of 40275621 is 12657204.

40275621 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 29582721 + 10692900 = 5439^2 + 3270^2 .

It is not a de Polignac number, because 40275621 - 2⁷ = 40275493 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40275623) 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 5 ways as a sum of consecutive naturals, for example, 2237526 + ... + 2237543.

It is an arithmetic number, because the mean of its divisors is an integer number (9695985).

Almost surely, 2^40275621 is an apocalyptic number.

It is an amenable number.

40275621 is a deficient number, since it is larger than the sum of its proper divisors (17900289).

40275621 is a wasteful number, since it uses less digits than its factorization.

40275621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4475075 (or 4475072 counting only the distinct ones).

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

The square root of 40275621 is about 6346.3076666673. The cubic root of 40275621 is about 342.7789008217.

The spelling of 40275621 in words is "forty million, two hundred seventy-five thousand, six hundred twenty-one".