54521518819 has 2 divisors, whose sum is σ = 54521518820. Its totient is φ = 54521518818.

The previous prime is 54521518813. The next prime is 54521518861. The reversal of 54521518819 is 91881512545.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 54521518819 - 2⁵ = 54521518787 is a prime.

It is a super-2 number, since 2×54521518819² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (54521518813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27260759409 + 27260759410.

It is an arithmetic number, because the mean of its divisors is an integer number (27260759410).

Almost surely, 2^54521518819 is an apocalyptic number.

54521518819 is a deficient number, since it is larger than the sum of its proper divisors (1).

54521518819 is an equidigital number, since it uses as much as digits as its factorization.

54521518819 is an evil number, because the sum of its binary digits is even.

The product of its digits is 576000, while the sum is 49.

The spelling of 54521518819 in words is "fifty-four billion, five hundred twenty-one million, five hundred eighteen thousand, eight hundred nineteen".