1505401 has 6 divisors (see below), whose sum is σ = 1599470. Its totient is φ = 1416576.

The previous prime is 1505381. The next prime is 1505407. The reversal of 1505401 is 1045051.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 1081600 + 423801 = 1040^2 + 651^2 .

It is not a de Polignac number, because 1505401 - 2⁵ = 1505369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1505407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2316 + ... + 2893.

2^1505401 is an apocalyptic number.

It is an amenable number.

1505401 is a deficient number, since it is larger than the sum of its proper divisors (94069).

1505401 is an equidigital number, since it uses as much as digits as its factorization.

1505401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5243 (or 5226 counting only the distinct ones).

The product of its (nonzero) digits is 100, while the sum is 16.

The square root of 1505401 is about 1226.9478391521. The cubic root of 1505401 is about 114.6086508317.

The spelling of 1505401 in words is "one million, five hundred five thousand, four hundred one".