5001561 has 8 divisors (see below), whose sum is σ = 7409760. Its totient is φ = 3334356.

The previous prime is 5001559. The next prime is 5001593. The reversal of 5001561 is 1651005.

It is not a de Polignac number, because 5001561 - 2¹ = 5001559 is a prime.

It is a super-2 number, since 2×5001561² = 50031224873442, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (5001361) 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, 92595 + ... + 92648.

It is an arithmetic number, because the mean of its divisors is an integer number (926220).

Almost surely, 2^5001561 is an apocalyptic number.

It is an amenable number.

5001561 is a deficient number, since it is larger than the sum of its proper divisors (2408199).

5001561 is a wasteful number, since it uses less digits than its factorization.

5001561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185252 (or 185246 counting only the distinct ones).

The product of its (nonzero) digits is 150, while the sum is 18.

The square root of 5001561 is about 2236.4170004720. The cubic root of 5001561 is about 171.0153879658.

Adding to 5001561 its reverse (1651005), we get a palindrome (6652566).

The spelling of 5001561 in words is "five million, one thousand, five hundred sixty-one".