55124011016521 has 16 divisors (see below), whose sum is σ = 56449218349440. Its totient is φ = 53809833168000.

The previous prime is 55124011016513. The next prime is 55124011016563. The reversal of 55124011016521 is 12561011042155.

It is a cyclic number.

It is not a de Polignac number, because 55124011016521 - 2³ = 55124011016513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55124011016621) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9970981 + ... + 14479933.

It is an arithmetic number, because the mean of its divisors is an integer number (3528076146840).

Almost surely, 2^{55124011016521} is an apocalyptic number.

It is an amenable number.

55124011016521 is a deficient number, since it is larger than the sum of its proper divisors (1325207332919).

55124011016521 is a wasteful number, since it uses less digits than its factorization.

55124011016521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4510176.

The product of its (nonzero) digits is 12000, while the sum is 34.

Adding to 55124011016521 its reverse (12561011042155), we get a palindrome (67685022058676).

The spelling of 55124011016521 in words is "fifty-five trillion, one hundred twenty-four billion, eleven million, sixteen thousand, five hundred twenty-one".