55000493 has 4 divisors (see below), whose sum is σ = 55396320. Its totient is φ = 54604668.

The previous prime is 55000471. The next prime is 55000499. The reversal of 55000493 is 39400055.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 39400055 = 5 ⋅7880011.

It is a cyclic number.

It is not a de Polignac number, because 55000493 - 2¹² = 54996397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55000499) 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, 197705 + ... + 197982.

It is an arithmetic number, because the mean of its divisors is an integer number (13849080).

Almost surely, 2^55000493 is an apocalyptic number.

It is an amenable number.

55000493 is a deficient number, since it is larger than the sum of its proper divisors (395827).

55000493 is a wasteful number, since it uses less digits than its factorization.

55000493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 395826.

The product of its (nonzero) digits is 2700, while the sum is 26.

The square root of 55000493 is about 7416.2317250744. The cubic root of 55000493 is about 380.2963823488.

The spelling of 55000493 in words is "fifty-five million, four hundred ninety-three", and thus it is an aban number.