53381429 has 6 divisors (see below), whose sum is σ = 53984214. Its totient is φ = 52780200.

The previous prime is 53381389. The next prime is 53381437. The reversal of 53381429 is 92418335.

53381429 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 52852900 + 528529 = 7270^2 + 727^2 .

It is a de Polignac number, because none of the positive numbers 2^k-53381429 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 (53381129) 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 5 ways as a sum of consecutive naturals, for example, 73064 + ... + 73790.

It is an arithmetic number, because the mean of its divisors is an integer number (8997369).

Almost surely, 2^53381429 is an apocalyptic number.

It is an amenable number.

53381429 is a deficient number, since it is larger than the sum of its proper divisors (602785).

53381429 is an frugal number, since it uses more digits than its factorization.

53381429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1555 (or 828 counting only the distinct ones).

The product of its digits is 25920, while the sum is 35.

The square root of 53381429 is about 7306.2595765549. The cubic root of 53381429 is about 376.5275269449.

The spelling of 53381429 in words is "fifty-three million, three hundred eighty-one thousand, four hundred twenty-nine".