55432809577 has 4 divisors (see below), whose sum is σ = 55546635136. Its totient is φ = 55318984020.

The previous prime is 55432809527. The next prime is 55432809583. The reversal of 55432809577 is 77590823455.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 77590823455 = 5 ⋅15518164691.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55432809577 is a prime.

It is a super-3 number, since 3×55432809577³ (a number of 33 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55432809527) 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, 56912049 + ... + 56913022.

It is an arithmetic number, because the mean of its divisors is an integer number (13886658784).

Almost surely, 2^55432809577 is an apocalyptic number.

It is an amenable number.

55432809577 is a deficient number, since it is larger than the sum of its proper divisors (113825559).

55432809577 is a wasteful number, since it uses less digits than its factorization.

55432809577 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113825558.

The product of its (nonzero) digits is 10584000, while the sum is 55.

The spelling of 55432809577 in words is "fifty-five billion, four hundred thirty-two million, eight hundred nine thousand, five hundred seventy-seven".