53909641 has 4 divisors (see below), whose sum is σ = 54183492. Its totient is φ = 53635792.

The previous prime is 53909633. The next prime is 53909663. The reversal of 53909641 is 14690935.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 51538041 + 2371600 = 7179^2 + 1540^2 .

It is a cyclic number.

It is not a de Polignac number, because 53909641 - 2³ = 53909633 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 53909641.

It is not an unprimeable number, because it can be changed into a prime (53901641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 136630 + ... + 137023.

It is an arithmetic number, because the mean of its divisors is an integer number (13545873).

Almost surely, 2^53909641 is an apocalyptic number.

It is an amenable number.

53909641 is a deficient number, since it is larger than the sum of its proper divisors (273851).

53909641 is a wasteful number, since it uses less digits than its factorization.

53909641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273850.

The product of its (nonzero) digits is 29160, while the sum is 37.

The square root of 53909641 is about 7342.3185030343. The cubic root of 53909641 is about 377.7653728113.

The spelling of 53909641 in words is "fifty-three million, nine hundred nine thousand, six hundred forty-one".