54790993 has 4 divisors (see below), whose sum is σ = 55689268. Its totient is φ = 53892720.

The previous prime is 54790979. The next prime is 54791057. The reversal of 54790993 is 39909745.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 39909745 = 5 ⋅7981949.

It can be written as a sum of positive squares in 2 ways, for example, as 15000129 + 39790864 = 3873^2 + 6308^2 .

It is a cyclic number.

It is not a de Polignac number, because 54790993 - 2¹³ = 54782801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (54790933) 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, 449046 + ... + 449167.

It is an arithmetic number, because the mean of its divisors is an integer number (13922317).

Almost surely, 2^54790993 is an apocalyptic number.

It is an amenable number.

54790993 is a deficient number, since it is larger than the sum of its proper divisors (898275).

54790993 is an equidigital number, since it uses as much as digits as its factorization.

54790993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 898274.

The product of its (nonzero) digits is 306180, while the sum is 46.

The square root of 54790993 is about 7402.0938253983. The cubic root of 54790993 is about 379.8129111357.

The spelling of 54790993 in words is "fifty-four million, seven hundred ninety thousand, nine hundred ninety-three".