55125412777513 has 4 divisors (see below), whose sum is σ = 59365829145028. Its totient is φ = 50884996410000.

The previous prime is 55125412777483. The next prime is 55125412777531. The reversal of 55125412777513 is 31577721452155.

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 3859998937344 + 51265413840169 = 1964688^2 + 7159987^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55125412777513 is a prime.

It is a super-2 number, since 2×55125412777513² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55125412777543) 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, 2120208183738 + ... + 2120208183763.

It is an arithmetic number, because the mean of its divisors is an integer number (14841457286257).

Almost surely, 2^{55125412777513} is an apocalyptic number.

It is an amenable number.

55125412777513 is a deficient number, since it is larger than the sum of its proper divisors (4240416367515).

55125412777513 is a wasteful number, since it uses less digits than its factorization.

55125412777513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4240416367514.

The product of its digits is 10290000, while the sum is 55.

The spelling of 55125412777513 in words is "fifty-five trillion, one hundred twenty-five billion, four hundred twelve million, seven hundred seventy-seven thousand, five hundred thirteen".