53981623 has 8 divisors (see below), whose sum is σ = 55036800. Its totient is φ = 52936248.

The previous prime is 53981617. The next prime is 53981651. The reversal of 53981623 is 32618935.

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

It is a cyclic number.

It is not a de Polignac number, because 53981623 - 2⁵ = 53981591 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53981693) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9198 + ... + 13876.

It is an arithmetic number, because the mean of its divisors is an integer number (6879600).

Almost surely, 2^53981623 is an apocalyptic number.

53981623 is a deficient number, since it is larger than the sum of its proper divisors (1055177).

53981623 is a wasteful number, since it uses less digits than its factorization.

53981623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4901.

The product of its digits is 38880, while the sum is 37.

The square root of 53981623 is about 7347.2187254770. The cubic root of 53981623 is about 377.9334331238.

It can be divided in two parts, 5398 and 1623, that added together give a triangular number (7021 = T₁₁₈).

The spelling of 53981623 in words is "fifty-three million, nine hundred eighty-one thousand, six hundred twenty-three".