5561620001 has 12 divisors (see below), whose sum is σ = 6471069552. Its totient is φ = 4766049288.

The previous prime is 5561619997. The next prime is 5561620013. The reversal of 5561620001 is 1000261655.

It is not a de Polignac number, because 5561620001 - 2² = 5561619997 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (5561620061) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 280646 + ... + 299808.

It is an arithmetic number, because the mean of its divisors is an integer number (539255796).

Almost surely, 2^5561620001 is an apocalyptic number.

It is an amenable number.

5561620001 is a deficient number, since it is larger than the sum of its proper divisors (909449551).

5561620001 is a wasteful number, since it uses less digits than its factorization.

5561620001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25100 (or 25093 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 5561620001 is about 74576.2696908340. The cubic root of 5561620001 is about 1771.7418244468.

Adding to 5561620001 its reverse (1000261655), we get a palindrome (6561881656).

The spelling of 5561620001 in words is "five billion, five hundred sixty-one million, six hundred twenty thousand, one".