1501145 has 4 divisors (see below), whose sum is σ = 1801380. Its totient is φ = 1200912.

The previous prime is 1501139. The next prime is 1501169. The reversal of 1501145 is 5411051.

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 817216 + 683929 = 904^2 + 827^2 .

It is a cyclic number.

It is not a de Polignac number, because 1501145 - 2⁶ = 1501081 is a prime.

It is a super-2 number, since 2×1501145² = 4506872622050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 150110 + ... + 150119.

It is an arithmetic number, because the mean of its divisors is an integer number (450345).

2^1501145 is an apocalyptic number.

It is an amenable number.

1501145 is a deficient number, since it is larger than the sum of its proper divisors (300235).

1501145 is an equidigital number, since it uses as much as digits as its factorization.

1501145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300234.

The product of its (nonzero) digits is 100, while the sum is 17.

The square root of 1501145 is about 1225.2122265142. The cubic root of 1501145 is about 114.5005434653.

Adding to 1501145 its reverse (5411051), we get a palindrome (6912196).

The spelling of 1501145 in words is "one million, five hundred one thousand, one hundred forty-five".