54512813 has 4 divisors (see below), whose sum is σ = 54617568. Its totient is φ = 54408060.

The previous prime is 54512807. The next prime is 54512851. The reversal of 54512813 is 31821545.

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 a cyclic number.

It is not a de Polignac number, because 54512813 - 2⁶ = 54512749 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 (54512893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51593 + ... + 52638.

It is an arithmetic number, because the mean of its divisors is an integer number (13654392).

Almost surely, 2^54512813 is an apocalyptic number.

It is an amenable number.

54512813 is a deficient number, since it is larger than the sum of its proper divisors (104755).

54512813 is a wasteful number, since it uses less digits than its factorization.

54512813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104754.

The product of its digits is 4800, while the sum is 29.

The square root of 54512813 is about 7383.2792849790. The cubic root of 54512813 is about 379.1690360168.

The spelling of 54512813 in words is "fifty-four million, five hundred twelve thousand, eight hundred thirteen".