53881839 has 24 divisors (see below), whose sum is σ = 85193472. Its totient is φ = 32544720.

The previous prime is 53881781. The next prime is 53881843. The reversal of 53881839 is 93818835.

53881839 is a `hidden beast` number, since 538 + 81 + 8 + 39 = 666.

It is not a de Polignac number, because 53881839 - 2¹³ = 53873647 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 53881794 and 53881803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53880839) 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 23 ways as a sum of consecutive naturals, for example, 35592 + ... + 37074.

It is an arithmetic number, because the mean of its divisors is an integer number (3549728).

Almost surely, 2^53881839 is an apocalyptic number.

53881839 is a deficient number, since it is larger than the sum of its proper divisors (31311633).

53881839 is a wasteful number, since it uses less digits than its factorization.

53881839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1867 (or 1864 counting only the distinct ones).

The product of its digits is 207360, while the sum is 45.

The square root of 53881839 is about 7340.4249876966. The cubic root of 53881839 is about 377.7004219128.

It can be divided in two parts, 5388 and 1839, that added together give a palindrome (7227).

The spelling of 53881839 in words is "fifty-three million, eight hundred eighty-one thousand, eight hundred thirty-nine".