5145505561 has 8 divisors (see below), whose sum is σ = 5883839424. Its totient is φ = 4407987120.

The previous prime is 5145505543. The next prime is 5145505579. The reversal of 5145505561 is 1655055415.

It is an interprime number because it is at equal distance from previous prime (5145505543) and next prime (5145505579).

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 5145505561 - 2⁹ = 5145505049 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 5145505561.

It is not an unprimeable number, because it can be changed into a prime (5145505591) 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, 190270 + ... + 215623.

It is an arithmetic number, because the mean of its divisors is an integer number (735479928).

Almost surely, 2^5145505561 is an apocalyptic number.

It is an amenable number.

5145505561 is a deficient number, since it is larger than the sum of its proper divisors (738333863).

5145505561 is a wasteful number, since it uses less digits than its factorization.

5145505561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 407711.

The product of its (nonzero) digits is 75000, while the sum is 37.

The square root of 5145505561 is about 71732.1793966975. The cubic root of 5145505561 is about 1726.4049953332.

The spelling of 5145505561 in words is "five billion, one hundred forty-five million, five hundred five thousand, five hundred sixty-one".