53394139 has 4 divisors (see below), whose sum is σ = 53481856. Its totient is φ = 53306424.

The previous prime is 53394137. The next prime is 53394151. The reversal of 53394139 is 93149335.

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 53394139 - 2¹ = 53394137 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 53394098 and 53394107.

It is not an unprimeable number, because it can be changed into a prime (53394137) 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, 42939 + ... + 44164.

It is an arithmetic number, because the mean of its divisors is an integer number (13370464).

Almost surely, 2^53394139 is an apocalyptic number.

53394139 is a deficient number, since it is larger than the sum of its proper divisors (87717).

53394139 is an equidigital number, since it uses as much as digits as its factorization.

53394139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87716.

The product of its digits is 43740, while the sum is 37.

The square root of 53394139 is about 7307.1293268971. The cubic root of 53394139 is about 376.5574080302.

The spelling of 53394139 in words is "fifty-three million, three hundred ninety-four thousand, one hundred thirty-nine".