53952391 has 4 divisors (see below), whose sum is σ = 54033232. Its totient is φ = 53871552.

The previous prime is 53952389. The next prime is 53952421. The reversal of 53952391 is 19325935.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19325935 = 5 ⋅3865187.

It is a cyclic number.

It is not a de Polignac number, because 53952391 - 2¹ = 53952389 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 53952391.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53952091) 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 3 ways as a sum of consecutive naturals, for example, 39411 + ... + 40756.

It is an arithmetic number, because the mean of its divisors is an integer number (13508308).

Almost surely, 2^53952391 is an apocalyptic number.

53952391 is a deficient number, since it is larger than the sum of its proper divisors (80841).

53952391 is an equidigital number, since it uses as much as digits as its factorization.

53952391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80840.

The product of its digits is 36450, while the sum is 37.

The square root of 53952391 is about 7345.2291318923. The cubic root of 53952391 is about 377.8652016017.

The spelling of 53952391 in words is "fifty-three million, nine hundred fifty-two thousand, three hundred ninety-one".