5201561001 has 16 divisors (see below), whose sum is σ = 8535895424. Its totient is φ = 2743680384.

The previous prime is 5201560979. The next prime is 5201561003. The reversal of 5201561001 is 1001651025.

It is not a de Polignac number, because 5201561001 - 2⁶ = 5201560937 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (5201561003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9526396 + ... + 9526941.

It is an arithmetic number, because the mean of its divisors is an integer number (533493464).

Almost surely, 2^5201561001 is an apocalyptic number.

It is an amenable number.

5201561001 is a deficient number, since it is larger than the sum of its proper divisors (3334334423).

5201561001 is a wasteful number, since it uses less digits than its factorization.

5201561001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19053360.

The product of its (nonzero) digits is 300, while the sum is 21.

The square root of 5201561001 is about 72121.8482916238. The cubic root of 5201561001 is about 1732.6515523261.

The spelling of 5201561001 in words is "five billion, two hundred one million, five hundred sixty-one thousand, one".