54972993 has 4 divisors (see below), whose sum is σ = 73297328. Its totient is φ = 36648660.

The previous prime is 54972989. The next prime is 54972997. The reversal of 54972993 is 39927945.

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 an interprime number because it is at equal distance from previous prime (54972989) and next prime (54972997).

It is not a de Polignac number, because 54972993 - 2² = 54972989 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (54972997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9162163 + ... + 9162168.

It is an arithmetic number, because the mean of its divisors is an integer number (18324332).

Almost surely, 2^54972993 is an apocalyptic number.

It is an amenable number.

54972993 is a deficient number, since it is larger than the sum of its proper divisors (18324335).

54972993 is a wasteful number, since it uses less digits than its factorization.

54972993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18324334.

The product of its digits is 612360, while the sum is 48.

The square root of 54972993 is about 7414.3774519510. The cubic root of 54972993 is about 380.2329896201.

The spelling of 54972993 in words is "fifty-four million, nine hundred seventy-two thousand, nine hundred ninety-three".