53967621 has 16 divisors (see below), whose sum is σ = 75686400. Its totient is φ = 34157760.

The previous prime is 53967607. The next prime is 53967631. The reversal of 53967621 is 12676935.

It is not a de Polignac number, because 53967621 - 2¹⁰ = 53966597 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 53967621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53967601) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 546 + ... + 10403.

It is an arithmetic number, because the mean of its divisors is an integer number (4730400).

Almost surely, 2^53967621 is an apocalyptic number.

It is an amenable number.

53967621 is a deficient number, since it is larger than the sum of its proper divisors (21718779).

53967621 is a wasteful number, since it uses less digits than its factorization.

53967621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11036.

The product of its digits is 68040, while the sum is 39.

The square root of 53967621 is about 7346.2657860984. The cubic root of 53967621 is about 377.9007535979.

The spelling of 53967621 in words is "fifty-three million, nine hundred sixty-seven thousand, six hundred twenty-one".