2041501561 has 8 divisors (see below), whose sum is σ = 2281412448. Its totient is φ = 1810644000.

The previous prime is 2041501547. The next prime is 2041501577. The reversal of 2041501561 is 1651051402.

It is a happy number.

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

It is a de Polignac number, because none of the positive numbers 2^k-2041501561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2041501061) 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, 2262855 + ... + 2263756.

It is an arithmetic number, because the mean of its divisors is an integer number (285176556).

Almost surely, 2^2041501561 is an apocalyptic number.

It is an amenable number.

2041501561 is a deficient number, since it is larger than the sum of its proper divisors (239910887).

2041501561 is a wasteful number, since it uses less digits than its factorization.

2041501561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4526663.

The product of its (nonzero) digits is 1200, while the sum is 25.

The square root of 2041501561 is about 45182.9786645369. The cubic root of 2041501561 is about 1268.5762375508.

Adding to 2041501561 its reverse (1651051402), we get a palindrome (3692552963).

The spelling of 2041501561 in words is "two billion, forty-one million, five hundred one thousand, five hundred sixty-one".