5556520561 has 8 divisors (see below), whose sum is σ = 5663022464. Its totient is φ = 5450515920.

The previous prime is 5556520559. The next prime is 5556520597. The reversal of 5556520561 is 1650256555.

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

It is not a de Polignac number, because 5556520561 - 2¹ = 5556520559 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5556520511) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 101715 + ... + 146488.

It is an arithmetic number, because the mean of its divisors is an integer number (707877808).

Almost surely, 2^5556520561 is an apocalyptic number.

It is an amenable number.

5556520561 is a deficient number, since it is larger than the sum of its proper divisors (106501903).

5556520561 is a wasteful number, since it uses less digits than its factorization.

5556520561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248631.

The product of its (nonzero) digits is 225000, while the sum is 40.

The square root of 5556520561 is about 74542.0724222234. The cubic root of 5556520561 is about 1771.2001564979.

The spelling of 5556520561 in words is "five billion, five hundred fifty-six million, five hundred twenty thousand, five hundred sixty-one".