55272165533 has 4 divisors (see below), whose sum is σ = 59523870588. Its totient is φ = 51020460480.

The previous prime is 55272165503. The next prime is 55272165551. The reversal of 55272165533 is 33556127255.

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

It can be written as a sum of positive squares in 2 ways, for example, as 17410010809 + 37862154724 = 131947^2 + 194582^2 .

It is a cyclic number.

It is not a de Polignac number, because 55272165533 - 2¹⁰ = 55272164509 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55272165503) 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, 2125852508 + ... + 2125852533.

It is an arithmetic number, because the mean of its divisors is an integer number (14880967647).

Almost surely, 2^55272165533 is an apocalyptic number.

It is an amenable number.

55272165533 is a deficient number, since it is larger than the sum of its proper divisors (4251705055).

55272165533 is a wasteful number, since it uses less digits than its factorization.

55272165533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4251705054.

The product of its digits is 945000, while the sum is 44.

The spelling of 55272165533 in words is "fifty-five billion, two hundred seventy-two million, one hundred sixty-five thousand, five hundred thirty-three".