2005501301531 has 16 divisors (see below), whose sum is σ = 2528511964608. Its totient is φ = 1548068544000.

The previous prime is 2005501301483. The next prime is 2005501301533. The reversal of 2005501301531 is 1351031055002.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 2005501301531 - 2¹⁰ = 2005501300507 is a prime.

It is a super-2 number, since 2×2005501301531² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2005501301531.

It is not an unprimeable number, because it can be changed into a prime (2005501301533) 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, 268758170 + ... + 268765631.

It is an arithmetic number, because the mean of its divisors is an integer number (158031997788).

Almost surely, 2^{2005501301531} is an apocalyptic number.

2005501301531 is a deficient number, since it is larger than the sum of its proper divisors (523010663077).

2005501301531 is a wasteful number, since it uses less digits than its factorization.

2005501301531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 537523862.

The product of its (nonzero) digits is 2250, while the sum is 26.

Adding to 2005501301531 its reverse (1351031055002), we get a palindrome (3356532356533).

It can be divided in two parts, 2005501 and 301531, that added together give a palindrome (2307032).

The spelling of 2005501301531 in words is "two trillion, five billion, five hundred one million, three hundred one thousand, five hundred thirty-one".