5561403505 has 16 divisors (see below), whose sum is σ = 7630945920. Its totient is φ = 3811594752.

The previous prime is 5561403373. The next prime is 5561403557. The reversal of 5561403505 is 5053041655.

It is not a de Polignac number, because 5561403505 - 2¹⁷ = 5561272433 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31206 + ... + 109984.

It is an arithmetic number, because the mean of its divisors is an integer number (476934120).

Almost surely, 2^5561403505 is an apocalyptic number.

It is an amenable number.

5561403505 is a deficient number, since it is larger than the sum of its proper divisors (2069542415).

5561403505 is a wasteful number, since it uses less digits than its factorization.

5561403505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80808.

The product of its (nonzero) digits is 45000, while the sum is 34.

The square root of 5561403505 is about 74574.8181694062. The cubic root of 5561403505 is about 1771.7188347426.

The spelling of 5561403505 in words is "five billion, five hundred sixty-one million, four hundred three thousand, five hundred five".