55091536542 has 48 divisors (see below), whose sum is σ = 136662226272. Its totient is φ = 15712159680.

The previous prime is 55091536541. The next prime is 55091536589. The reversal of 55091536542 is 24563519055.

55091536542 is a `hidden beast` number, since 5 + 50 + 9 + 1 + 53 + 6 + 542 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55091536541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 322309 + ... + 462672.

It is an arithmetic number, because the mean of its divisors is an integer number (2847129714).

Almost surely, 2^55091536542 is an apocalyptic number.

55091536542 is an abundant number, since it is smaller than the sum of its proper divisors (81570689730).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55091536542 is a wasteful number, since it uses less digits than its factorization.

55091536542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 785553 (or 785550 counting only the distinct ones).

The product of its (nonzero) digits is 810000, while the sum is 45.

The spelling of 55091536542 in words is "fifty-five billion, ninety-one million, five hundred thirty-six thousand, five hundred forty-two".