55542013091 has 2 divisors, whose sum is σ = 55542013092. Its totient is φ = 55542013090.

The previous prime is 55542013069. The next prime is 55542013147. The reversal of 55542013091 is 19031024555.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55542013091 - 2⁶ = 55542013027 is a prime.

It is not a weakly prime, because it can be changed into another prime (55542013001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27771006545 + 27771006546.

It is an arithmetic number, because the mean of its divisors is an integer number (27771006546).

Almost surely, 2^55542013091 is an apocalyptic number.

55542013091 is a deficient number, since it is larger than the sum of its proper divisors (1).

55542013091 is an equidigital number, since it uses as much as digits as its factorization.

55542013091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27000, while the sum is 35.

The spelling of 55542013091 in words is "fifty-five billion, five hundred forty-two million, thirteen thousand, ninety-one".