53355139 has 4 divisors (see below), whose sum is σ = 53998056. Its totient is φ = 52712224.

The previous prime is 53355091. The next prime is 53355143. The reversal of 53355139 is 93155335.

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 53355139 - 2¹³ = 53346947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53355179) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 321334 + ... + 321499.

It is an arithmetic number, because the mean of its divisors is an integer number (13499514).

Almost surely, 2^53355139 is an apocalyptic number.

53355139 is a deficient number, since it is larger than the sum of its proper divisors (642917).

53355139 is an equidigital number, since it uses as much as digits as its factorization.

53355139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 642916.

The product of its digits is 30375, while the sum is 34.

The square root of 53355139 is about 7304.4602127741. The cubic root of 53355139 is about 376.4657043575.

The spelling of 53355139 in words is "fifty-three million, three hundred fifty-five thousand, one hundred thirty-nine".