1351145 has 4 divisors (see below), whose sum is σ = 1621380. Its totient is φ = 1080912.

The previous prime is 1351127. The next prime is 1351151. The reversal of 1351145 is 5411531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5411531 = 149 ⋅36319.

It can be written as a sum of positive squares in 2 ways, for example, as 755161 + 595984 = 869^2 + 772^2 .

It is a cyclic number.

It is not a de Polignac number, because 1351145 - 2⁸ = 1350889 is a prime.

It is a super-2 number, since 2×1351145² = 3651185622050, 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, 135110 + ... + 135119.

It is an arithmetic number, because the mean of its divisors is an integer number (405345).

2^1351145 is an apocalyptic number.

It is an amenable number.

1351145 is a deficient number, since it is larger than the sum of its proper divisors (270235).

1351145 is an equidigital number, since it uses as much as digits as its factorization.

1351145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270234.

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

The square root of 1351145 is about 1162.3876289775. The cubic root of 1351145 is about 110.5521821745.

Adding to 1351145 its reverse (5411531), we get a palindrome (6762676).

The spelling of 1351145 in words is "one million, three hundred fifty-one thousand, one hundred forty-five".