55152266521 has 8 divisors (see below), whose sum is σ = 60248199744. Its totient is φ = 50070015120.

The previous prime is 55152266509. The next prime is 55152266569. The reversal of 55152266521 is 12566225155.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 55152266521 - 2²¹ = 55150169369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55152266821) 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 7 ways as a sum of consecutive naturals, for example, 3412021 + ... + 3428146.

It is an arithmetic number, because the mean of its divisors is an integer number (7531024968).

Almost surely, 2^55152266521 is an apocalyptic number.

It is an amenable number.

55152266521 is a deficient number, since it is larger than the sum of its proper divisors (5095933223).

55152266521 is a wasteful number, since it uses less digits than its factorization.

55152266521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6840911.

The product of its digits is 180000, while the sum is 40.

The spelling of 55152266521 in words is "fifty-five billion, one hundred fifty-two million, two hundred sixty-six thousand, five hundred twenty-one".