55520714989 has 4 divisors (see below), whose sum is σ = 55523135520. Its totient is φ = 55518294460.

The previous prime is 55520714983. The next prime is 55520715011. The reversal of 55520714989 is 98941702555.

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: 98941702555 = 5 ⋅19788340511.

It is a cyclic number.

It is not a de Polignac number, because 55520714989 - 2²¹ = 55518617837 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55520714983) 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, 1175527 + ... + 1221844.

It is an arithmetic number, because the mean of its divisors is an integer number (13880783880).

Almost surely, 2^55520714989 is an apocalyptic number.

It is an amenable number.

55520714989 is a deficient number, since it is larger than the sum of its proper divisors (2420531).

55520714989 is a wasteful number, since it uses less digits than its factorization.

55520714989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2420530.

The product of its (nonzero) digits is 4536000, while the sum is 55.

The spelling of 55520714989 in words is "fifty-five billion, five hundred twenty million, seven hundred fourteen thousand, nine hundred eighty-nine".