1505261 has 2 divisors, whose sum is σ = 1505262. Its totient is φ = 1505260.

The previous prime is 1505243. The next prime is 1505279. The reversal of 1505261 is 1625051.

1505261 is nontrivially palindromic in base 8.

It is a balanced prime because it is at equal distance from previous prime (1505243) and next prime (1505279).

It can be written as a sum of positive squares in only one way, i.e., 855625 + 649636 = 925^2 + 806^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1505261 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1505201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 752630 + 752631.

It is an arithmetic number, because the mean of its divisors is an integer number (752631).

2^1505261 is an apocalyptic number.

It is an amenable number.

1505261 is a deficient number, since it is larger than the sum of its proper divisors (1).

1505261 is an equidigital number, since it uses as much as digits as its factorization.

1505261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 300, while the sum is 20.

The square root of 1505261 is about 1226.8907856855. The cubic root of 1505261 is about 114.6050979116.

The spelling of 1505261 in words is "one million, five hundred five thousand, two hundred sixty-one".