53320139 has 2 divisors, whose sum is σ = 53320140. Its totient is φ = 53320138.

The previous prime is 53320121. The next prime is 53320147. The reversal of 53320139 is 93102335.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 53320139 - 2¹⁶ = 53254603 is a prime.

It is equal to p_3188114 and since 53320139 and 3188114 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (53320159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26660069 + 26660070.

It is an arithmetic number, because the mean of its divisors is an integer number (26660070).

Almost surely, 2^53320139 is an apocalyptic number.

53320139 is a deficient number, since it is larger than the sum of its proper divisors (1).

53320139 is an equidigital number, since it uses as much as digits as its factorization.

53320139 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2430, while the sum is 26.

The square root of 53320139 is about 7302.0640232745. The cubic root of 53320139 is about 376.3833681347.

The spelling of 53320139 in words is "fifty-three million, three hundred twenty thousand, one hundred thirty-nine".