2501301561 has 16 divisors (see below), whose sum is σ = 3662358528. Its totient is φ = 1505898000.

The previous prime is 2501301559. The next prime is 2501301571. The reversal of 2501301561 is 1651031052.

2501301561 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2501301561 - 2¹ = 2501301559 is a prime.

It is a super-4 number, since 4×2501301561⁴ (a number of 39 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (2501301541) 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, 246001 + ... + 255966.

It is an arithmetic number, because the mean of its divisors is an integer number (228897408).

Almost surely, 2^2501301561 is an apocalyptic number.

It is an amenable number.

2501301561 is a deficient number, since it is larger than the sum of its proper divisors (1161056967).

2501301561 is a wasteful number, since it uses less digits than its factorization.

2501301561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 502132.

The product of its (nonzero) digits is 900, while the sum is 24.

The square root of 2501301561 is about 50013.0139163798. The cubic root of 2501301561 is about 1357.4442994419. Note that the first 3 decimals are identical.

The spelling of 2501301561 in words is "two billion, five hundred one million, three hundred one thousand, five hundred sixty-one".