1501261 has 2 divisors, whose sum is σ = 1501262. Its totient is φ = 1501260.

The previous prime is 1501229. The next prime is 1501303. The reversal of 1501261 is 1621051.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1425636 + 75625 = 1194^2 + 275^2 .

It is a cyclic number.

It is not a de Polignac number, because 1501261 - 2⁵ = 1501229 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1501561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 750630 + 750631.

It is an arithmetic number, because the mean of its divisors is an integer number (750631).

2^1501261 is an apocalyptic number.

It is an amenable number.

1501261 is a deficient number, since it is larger than the sum of its proper divisors (1).

1501261 is an equidigital number, since it uses as much as digits as its factorization.

1501261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 60, while the sum is 16.

The square root of 1501261 is about 1225.2595643373. The cubic root of 1501261 is about 114.5034927076.

The spelling of 1501261 in words is "one million, five hundred one thousand, two hundred sixty-one".