53775439 has 4 divisors (see below), whose sum is σ = 53900640. Its totient is φ = 53650240.

The previous prime is 53775433. The next prime is 53775461. The reversal of 53775439 is 93457735.

It is a happy number.

53775439 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 53775439 - 2³ = 53775431 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 53775395 and 53775404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53775431) 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, 61954 + ... + 62815.

It is an arithmetic number, because the mean of its divisors is an integer number (13475160).

Almost surely, 2^53775439 is an apocalyptic number.

53775439 is a deficient number, since it is larger than the sum of its proper divisors (125201).

53775439 is a wasteful number, since it uses less digits than its factorization.

53775439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125200.

The product of its digits is 396900, while the sum is 43.

The square root of 53775439 is about 7333.1738694783. The cubic root of 53775439 is about 377.4516441723.

It can be divided in two parts, 5377 and 5439, that added together give a square (10816 = 104²).

The spelling of 53775439 in words is "fifty-three million, seven hundred seventy-five thousand, four hundred thirty-nine".