5051661060557 has 4 divisors (see below), whose sum is σ = 5051702122236. Its totient is φ = 5051619998880.

The previous prime is 5051661060503. The next prime is 5051661060569. The reversal of 5051661060557 is 7550601661505.

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 3865415516356 + 1186245544201 = 1966066^2 + 1089149^2 .

It is a cyclic number.

It is not a de Polignac number, because 5051661060557 - 2⁸ = 5051661060301 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 (5051661068557) 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, 20345744 + ... + 20592537.

It is an arithmetic number, because the mean of its divisors is an integer number (1262925530559).

Almost surely, 2^{5051661060557} is an apocalyptic number.

It is an amenable number.

5051661060557 is a deficient number, since it is larger than the sum of its proper divisors (41061679).

5051661060557 is a wasteful number, since it uses less digits than its factorization.

5051661060557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41061678.

The product of its (nonzero) digits is 945000, while the sum is 47.

The spelling of 5051661060557 in words is "five trillion, fifty-one billion, six hundred sixty-one million, sixty thousand, five hundred fifty-seven".