55540493 has 8 divisors (see below), whose sum is σ = 56039040. Its totient is φ = 55044640.

The previous prime is 55540487. The next prime is 55540519. The reversal of 55540493 is 39404555.

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 55540493 - 2¹⁰ = 55539469 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55540453) 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, 66746 + ... + 67572.

It is an arithmetic number, because the mean of its divisors is an integer number (7004880).

Almost surely, 2^55540493 is an apocalyptic number.

It is an amenable number.

55540493 is a deficient number, since it is larger than the sum of its proper divisors (498547).

55540493 is a wasteful number, since it uses less digits than its factorization.

55540493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1347.

The product of its (nonzero) digits is 54000, while the sum is 35.

The square root of 55540493 is about 7452.5494295576. The cubic root of 55540493 is about 381.5369264237.

The spelling of 55540493 in words is "fifty-five million, five hundred forty thousand, four hundred ninety-three".