5615001561 has 8 divisors (see below), whose sum is σ = 8062566400. Its totient is φ = 3455385552.

The previous prime is 5615001529. The next prime is 5615001571. The reversal of 5615001561 is 1651005165.

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

It is not a de Polignac number, because 5615001561 - 2⁵ = 5615001529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5615001571) 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, 71987161 + ... + 71987238.

It is an arithmetic number, because the mean of its divisors is an integer number (1007820800).

Almost surely, 2^5615001561 is an apocalyptic number.

It is an amenable number.

5615001561 is a deficient number, since it is larger than the sum of its proper divisors (2447564839).

5615001561 is a wasteful number, since it uses less digits than its factorization.

5615001561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143974415.

The product of its (nonzero) digits is 4500, while the sum is 30.

The square root of 5615001561 is about 74933.3140932656. The cubic root of 5615001561 is about 1777.3922974932.

The spelling of 5615001561 in words is "five billion, six hundred fifteen million, one thousand, five hundred sixty-one".