54521212545 has 48 divisors (see below), whose sum is σ = 97233486480. Its totient is φ = 28240814592.

The previous prime is 54521212541. The next prime is 54521212573.

54521212545 is a `hidden beast` number, since 5 + 4 + 521 + 2 + 125 + 4 + 5 = 666.

54521212545 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 8 ways, for example, as 3209449104 + 51311763441 = 56652^2 + 226521^2 .

It is not a de Polignac number, because 54521212545 - 2² = 54521212541 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (54521212541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 898011 + ... + 956799.

It is an arithmetic number, because the mean of its divisors is an integer number (2025697635).

Almost surely, 2^54521212545 is an apocalyptic number.

It is an amenable number.

54521212545 is a deficient number, since it is larger than the sum of its proper divisors (42712273935).

54521212545 is a wasteful number, since it uses less digits than its factorization.

54521212545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59394 (or 59391 counting only the distinct ones).

The product of its digits is 80000, while the sum is 36.

The spelling of 54521212545 in words is "fifty-four billion, five hundred twenty-one million, two hundred twelve thousand, five hundred forty-five".