2011601501 has 64 divisors (see below), whose sum is σ = 2690580480. Its totient is φ = 1460954880.

The previous prime is 2011601461. The next prime is 2011601503. The reversal of 2011601501 is 1051061102.

It is not a de Polignac number, because 2011601501 - 2⁶ = 2011601437 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2011601501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2011601503) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5481020 + ... + 5481386.

It is an arithmetic number, because the mean of its divisors is an integer number (42040320).

Almost surely, 2^2011601501 is an apocalyptic number.

It is an amenable number.

2011601501 is a deficient number, since it is larger than the sum of its proper divisors (678978979).

2011601501 is a wasteful number, since it uses less digits than its factorization.

2011601501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 514.

The product of its (nonzero) digits is 60, while the sum is 17.

The square root of 2011601501 is about 44850.8807159904. The cubic root of 2011601501 is about 1262.3525170464.

Adding to 2011601501 its reverse (1051061102), we get a palindrome (3062662603).

It can be divided in two parts, 2011601 and 501, that added together give a palindrome (2012102).

The spelling of 2011601501 in words is "two billion, eleven million, six hundred one thousand, five hundred one".