55777550501 has 8 divisors (see below), whose sum is σ = 57341328408. Its totient is φ = 54223456000.

The previous prime is 55777550473. The next prime is 55777550503. The reversal of 55777550501 is 10505577755.

It can be written as a sum of positive squares in 4 ways, for example, as 576048001 + 55201502500 = 24001^2 + 234950^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 55777550501 - 2²⁶ = 55710441637 is a prime.

It is a super-2 number, since 2×55777550501² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55777550503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2409170 + ... + 2432211.

It is an arithmetic number, because the mean of its divisors is an integer number (7167666051).

Almost surely, 2^55777550501 is an apocalyptic number.

It is an amenable number.

55777550501 is a deficient number, since it is larger than the sum of its proper divisors (1563777907).

55777550501 is a wasteful number, since it uses less digits than its factorization.

55777550501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4841703.

The product of its (nonzero) digits is 1071875, while the sum is 47.

The spelling of 55777550501 in words is "fifty-five billion, seven hundred seventy-seven million, five hundred fifty thousand, five hundred one".