55140539 has 2 divisors, whose sum is σ = 55140540. Its totient is φ = 55140538.

The previous prime is 55140493. The next prime is 55140551. The reversal of 55140539 is 93504155.

55140539 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55140539 - 2¹² = 55136443 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (55140139) 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 as a sum of consecutive naturals, namely, 27570269 + 27570270.

It is an arithmetic number, because the mean of its divisors is an integer number (27570270).

Almost surely, 2^55140539 is an apocalyptic number.

55140539 is a deficient number, since it is larger than the sum of its proper divisors (1).

55140539 is an equidigital number, since it uses as much as digits as its factorization.

55140539 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13500, while the sum is 32.

The square root of 55140539 is about 7425.6675794167. The cubic root of 55140539 is about 380.6188876223.

The spelling of 55140539 in words is "fifty-five million, one hundred forty thousand, five hundred thirty-nine".