54550091 has 4 divisors (see below), whose sum is σ = 55579392. Its totient is φ = 53520792.

The previous prime is 54550087. The next prime is 54550117. The reversal of 54550091 is 19005545.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 54550091 - 2² = 54550087 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (54550021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 514571 + ... + 514676.

It is an arithmetic number, because the mean of its divisors is an integer number (13894848).

Almost surely, 2^54550091 is an apocalyptic number.

54550091 is a deficient number, since it is larger than the sum of its proper divisors (1029301).

54550091 is a wasteful number, since it uses less digits than its factorization.

54550091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1029300.

The product of its (nonzero) digits is 4500, while the sum is 29.

The square root of 54550091 is about 7385.8033415465. The cubic root of 54550091 is about 379.2554465432.

The spelling of 54550091 in words is "fifty-four million, five hundred fifty thousand, ninety-one".