53621966 has 8 divisors (see below), whose sum is σ = 81336960. Its totient is φ = 26509648.

The previous prime is 53621963. The next prime is 53621977. The reversal of 53621966 is 66912635.

53621966 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53621963) 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 3 ways as a sum of consecutive naturals, for example, 150446 + ... + 150801.

It is an arithmetic number, because the mean of its divisors is an integer number (10167120).

Almost surely, 2^53621966 is an apocalyptic number.

53621966 is a deficient number, since it is larger than the sum of its proper divisors (27714994).

53621966 is a wasteful number, since it uses less digits than its factorization.

53621966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 301338.

The product of its digits is 58320, while the sum is 38.

The square root of 53621966 is about 7322.7020969038. The cubic root of 53621966 is about 377.0922246214.

The spelling of 53621966 in words is "fifty-three million, six hundred twenty-one thousand, nine hundred sixty-six".