5557561537 has 16 divisors (see below), whose sum is σ = 6283644480. Its totient is φ = 4868942400.

The previous prime is 5557561469. The next prime is 5557561543. The reversal of 5557561537 is 7351657555.

It is a cyclic number.

It is not a de Polignac number, because 5557561537 - 2¹⁹ = 5557037249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5557561547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 156478 + ... + 188680.

It is an arithmetic number, because the mean of its divisors is an integer number (392727780).

Almost surely, 2^5557561537 is an apocalyptic number.

It is an amenable number.

5557561537 is a deficient number, since it is larger than the sum of its proper divisors (726082943).

5557561537 is a wasteful number, since it uses less digits than its factorization.

5557561537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32784.

The product of its digits is 2756250, while the sum is 49.

The square root of 5557561537 is about 74549.0545681164. The cubic root of 5557561537 is about 1771.3107569901.

The spelling of 5557561537 in words is "five billion, five hundred fifty-seven million, five hundred sixty-one thousand, five hundred thirty-seven".