55454993 has 8 divisors (see below), whose sum is σ = 61903776. Its totient is φ = 49240800.

The previous prime is 55454983. The next prime is 55455007. The reversal of 55454993 is 39945455.

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 55454993 - 2¹⁰ = 55453969 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (55454923) 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, 58148 + ... + 59093.

It is an arithmetic number, because the mean of its divisors is an integer number (7737972).

Almost surely, 2^55454993 is an apocalyptic number.

It is an amenable number.

55454993 is a deficient number, since it is larger than the sum of its proper divisors (6448783).

55454993 is a wasteful number, since it uses less digits than its factorization.

55454993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117295.

The product of its digits is 486000, while the sum is 44.

The square root of 55454993 is about 7446.8109281759. The cubic root of 55454993 is about 381.3410443498.

The spelling of 55454993 in words is "fifty-five million, four hundred fifty-four thousand, nine hundred ninety-three".