54477993 has 4 divisors (see below), whose sum is σ = 72637328. Its totient is φ = 36318660.

The previous prime is 54477977. The next prime is 54478001. The reversal of 54477993 is 39977445.

It is a happy number.

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.

It is not a de Polignac number, because 54477993 - 2⁴ = 54477977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (54477953) 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, 9079663 + ... + 9079668.

It is an arithmetic number, because the mean of its divisors is an integer number (18159332).

Almost surely, 2^54477993 is an apocalyptic number.

It is an amenable number.

54477993 is a deficient number, since it is larger than the sum of its proper divisors (18159335).

54477993 is a wasteful number, since it uses less digits than its factorization.

54477993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18159334.

The product of its digits is 952560, while the sum is 48.

The square root of 54477993 is about 7380.9208775057. The cubic root of 54477993 is about 379.0882875519.

The spelling of 54477993 in words is "fifty-four million, four hundred seventy-seven thousand, nine hundred ninety-three".