1385251 has 4 divisors (see below), whose sum is σ = 1583152. Its totient is φ = 1187352.

The previous prime is 1385213. The next prime is 1385273. The reversal of 1385251 is 1525831.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1385251 - 2¹¹ = 1383203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1385291) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 98940 + ... + 98953.

It is an arithmetic number, because the mean of its divisors is an integer number (395788).

2^1385251 is an apocalyptic number.

1385251 is a deficient number, since it is larger than the sum of its proper divisors (197901).

1385251 is an equidigital number, since it uses as much as digits as its factorization.

1385251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197900.

The product of its digits is 1200, while the sum is 25.

The square root of 1385251 is about 1176.9668644444. The cubic root of 1385251 is about 111.4746602649.

It can be divided in two parts, 13 and 85251, that added together give a square (85264 = 292²).

The spelling of 1385251 in words is "one million, three hundred eighty-five thousand, two hundred fifty-one".