540000091 has 8 divisors (see below), whose sum is σ = 543072320. Its totient is φ = 536934528.

The previous prime is 540000073. The next prime is 540000103. The reversal of 540000091 is 190000045.

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

It is a cyclic number.

It is not a de Polignac number, because 540000091 - 2⁵ = 540000059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (540000031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 302995 + ... + 304771.

It is an arithmetic number, because the mean of its divisors is an integer number (67884040).

Almost surely, 2^540000091 is an apocalyptic number.

540000091 is a deficient number, since it is larger than the sum of its proper divisors (3072229).

540000091 is a wasteful number, since it uses less digits than its factorization.

540000091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3333.

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 540000091 is about 23237.9020352527. The cubic root of 540000091 is about 814.3253307214.

The spelling of 540000091 in words is "five hundred forty million, ninety-one", and thus it is an aban number.