55006511201571 has 4 divisors (see below), whose sum is σ = 73342014935432. Its totient is φ = 36671007467712.

The previous prime is 55006511201569. The next prime is 55006511201573. The reversal of 55006511201571 is 17510211560055.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (55006511201569) and next prime (55006511201573).

It is not a de Polignac number, because 55006511201571 - 2¹ = 55006511201569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55006511201573) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9167751866926 + ... + 9167751866931.

It is an arithmetic number, because the mean of its divisors is an integer number (18335503733858).

Almost surely, 2^{55006511201571} is an apocalyptic number.

55006511201571 is a deficient number, since it is larger than the sum of its proper divisors (18335503733861).

55006511201571 is a wasteful number, since it uses less digits than its factorization.

55006511201571 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18335503733860.

The product of its (nonzero) digits is 52500, while the sum is 39.

The spelling of 55006511201571 in words is "fifty-five trillion, six billion, five hundred eleven million, two hundred one thousand, five hundred seventy-one".