2001487541 has 2 divisors, whose sum is σ = 2001487542. Its totient is φ = 2001487540.

The previous prime is 2001487513. The next prime is 2001487547. The reversal of 2001487541 is 1457841002.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1249905316 + 751582225 = 35354^2 + 27415^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2001487541 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2001487498 and 2001487507.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2001487547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1000743770 + 1000743771.

It is an arithmetic number, because the mean of its divisors is an integer number (1000743771).

Almost surely, 2^2001487541 is an apocalyptic number.

It is an amenable number.

2001487541 is a deficient number, since it is larger than the sum of its proper divisors (1).

2001487541 is an equidigital number, since it uses as much as digits as its factorization.

2001487541 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8960, while the sum is 32.

The square root of 2001487541 is about 44737.9876726703. The cubic root of 2001487541 is about 1260.2333365209.

The spelling of 2001487541 in words is "two billion, one million, four hundred eighty-seven thousand, five hundred forty-one".