1501385 has 4 divisors (see below), whose sum is σ = 1801668. Its totient is φ = 1201104.

The previous prime is 1501369. The next prime is 1501411. The reversal of 1501385 is 5831051.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 219961 + 1281424 = 469^2 + 1132^2 .

It is a cyclic number.

It is not a de Polignac number, because 1501385 - 2⁴ = 1501369 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1501385.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 150134 + ... + 150143.

It is an arithmetic number, because the mean of its divisors is an integer number (450417).

2^1501385 is an apocalyptic number.

It is an amenable number.

1501385 is a deficient number, since it is larger than the sum of its proper divisors (300283).

1501385 is an equidigital number, since it uses as much as digits as its factorization.

1501385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 300282.

The product of its (nonzero) digits is 600, while the sum is 23.

The square root of 1501385 is about 1225.3101648154. The cubic root of 1501385 is about 114.5066451779.

The spelling of 1501385 in words is "one million, five hundred one thousand, three hundred eighty-five".