1501531441 has 2 divisors, whose sum is σ = 1501531442. Its totient is φ = 1501531440.

The previous prime is 1501531417. The next prime is 1501531459. The reversal of 1501531441 is 1441351051.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1448183025 + 53348416 = 38055^2 + 7304^2 .

It is a cyclic number.

It is not a de Polignac number, because 1501531441 - 2⁷ = 1501531313 is a prime.

It is not a weakly prime, because it can be changed into another prime (1501531741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 750765720 + 750765721.

It is an arithmetic number, because the mean of its divisors is an integer number (750765721).

Almost surely, 2^1501531441 is an apocalyptic number.

It is an amenable number.

1501531441 is a deficient number, since it is larger than the sum of its proper divisors (1).

1501531441 is an equidigital number, since it uses as much as digits as its factorization.

1501531441 is an evil number, because the sum of its binary digits is even.

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

The square root of 1501531441 is about 38749.5992366373. The cubic root of 1501531441 is about 1145.1036794555.

Adding to 1501531441 its reverse (1441351051), we get a palindrome (2942882492).

The spelling of 1501531441 in words is "one billion, five hundred one million, five hundred thirty-one thousand, four hundred forty-one".