91755542 has 8 divisors (see below), whose sum is σ = 137814600. Its totient is φ = 45817344.

The previous prime is 91755539. The next prime is 91755551. The reversal of 91755542 is 24555719.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 91755496 and 91755505.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28292 + ... + 31367.

It is an arithmetic number, because the mean of its divisors is an integer number (17226825).

Almost surely, 2^91755542 is an apocalyptic number.

91755542 is a deficient number, since it is larger than the sum of its proper divisors (46059058).

91755542 is a wasteful number, since it uses less digits than its factorization.

91755542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60430.

The product of its digits is 63000, while the sum is 38.

The square root of 91755542 is about 9578.9113160108. The cubic root of 91755542 is about 451.0355443853.

The spelling of 91755542 in words is "ninety-one million, seven hundred fifty-five thousand, five hundred forty-two".