1315251 has 16 divisors (see below), whose sum is σ = 2227200. Its totient is φ = 751464.

The previous prime is 1315243. The next prime is 1315253. The reversal of 1315251 is 1525131.

It is not a de Polignac number, because 1315251 - 2³ = 1315243 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1315253) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3291 + ... + 3668.

It is an arithmetic number, because the mean of its divisors is an integer number (139200).

2^1315251 is an apocalyptic number.

1315251 is a deficient number, since it is larger than the sum of its proper divisors (911949).

1315251 is an equidigital number, since it uses as much as digits as its factorization.

1315251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6975 (or 6969 counting only the distinct ones).

The product of its digits is 150, while the sum is 18.

The square root of 1315251 is about 1146.8439300969. The cubic root of 1315251 is about 109.5644207154.

It can be divided in two parts, 13152 and 51, that added together give a triangular number (13203 = T₁₆₂).

The spelling of 1315251 in words is "one million, three hundred fifteen thousand, two hundred fifty-one".