2601231505 has 8 divisors (see below), whose sum is σ = 3123577512. Its totient is φ = 2079585408.

The previous prime is 2601231491. The next prime is 2601231533. The reversal of 2601231505 is 5051321062.

It can be written as a sum of positive squares in 4 ways, for example, as 108326464 + 2492905041 = 10408^2 + 49929^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 2601231505 - 2⁹ = 2601230993 is a prime.

It is a super-3 number, since 3×2601231505³ (a number of 29 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2601231505.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 166764 + ... + 181693.

It is an arithmetic number, because the mean of its divisors is an integer number (390447189).

Almost surely, 2^2601231505 is an apocalyptic number.

It is an amenable number.

2601231505 is a deficient number, since it is larger than the sum of its proper divisors (522346007).

2601231505 is a wasteful number, since it uses less digits than its factorization.

2601231505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 349955.

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 2601231505 is about 51002.2696063616. The cubic root of 2601231505 is about 1375.2859359064.

Adding to 2601231505 its reverse (5051321062), we get a palindrome (7652552567).

The spelling of 2601231505 in words is "two billion, six hundred one million, two hundred thirty-one thousand, five hundred five".