55520715019 has 16 divisors (see below), whose sum is σ = 70096849920. Its totient is φ = 42715258560.

The previous prime is 55520715011. The next prime is 55520715109. The reversal of 55520715019 is 91051702555.

It is a happy number.

55520715019 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 55520715019 - 2³ = 55520715011 is a prime.

It is a super-2 number, since 2×55520715019² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55520715011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4557514 + ... + 4569679.

It is an arithmetic number, because the mean of its divisors is an integer number (4381053120).

Almost surely, 2^55520715019 is an apocalyptic number.

55520715019 is a deficient number, since it is larger than the sum of its proper divisors (14576134901).

55520715019 is a wasteful number, since it uses less digits than its factorization.

55520715019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9127290.

The product of its (nonzero) digits is 78750, while the sum is 40.

The spelling of 55520715019 in words is "fifty-five billion, five hundred twenty million, seven hundred fifteen thousand, nineteen".