53681429 has 4 divisors (see below), whose sum is σ = 55413120. Its totient is φ = 51949740.

The previous prime is 53681377. The next prime is 53681431. The reversal of 53681429 is 92418635.

It is a happy number.

53681429 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 53681429 - 2¹² = 53677333 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 53681392 and 53681401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53681729) 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, 865799 + ... + 865860.

It is an arithmetic number, because the mean of its divisors is an integer number (13853280).

Almost surely, 2^53681429 is an apocalyptic number.

It is an amenable number.

53681429 is a deficient number, since it is larger than the sum of its proper divisors (1731691).

53681429 is a wasteful number, since it uses less digits than its factorization.

53681429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1731690.

The product of its digits is 51840, while the sum is 38.

The square root of 53681429 is about 7326.7611534702. The cubic root of 53681429 is about 377.2315627397.

The spelling of 53681429 in words is "fifty-three million, six hundred eighty-one thousand, four hundred twenty-nine".