55537543 has 2 divisors, whose sum is σ = 55537544. Its totient is φ = 55537542.

The previous prime is 55537519. The next prime is 55537567. The reversal of 55537543 is 34573555.

It is a balanced prime because it is at equal distance from previous prime (55537519) and next prime (55537567).

It is a cyclic number.

It is not a de Polignac number, because 55537543 - 2²¹ = 53440391 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55537243) 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 as a sum of consecutive naturals, namely, 27768771 + 27768772.

It is an arithmetic number, because the mean of its divisors is an integer number (27768772).

Almost surely, 2^55537543 is an apocalyptic number.

55537543 is a deficient number, since it is larger than the sum of its proper divisors (1).

55537543 is an equidigital number, since it uses as much as digits as its factorization.

55537543 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 157500, while the sum is 37.

The square root of 55537543 is about 7452.3515080812. The cubic root of 55537543 is about 381.5301712690.

The spelling of 55537543 in words is "fifty-five million, five hundred thirty-seven thousand, five hundred forty-three".