1264251 has 4 divisors (see below), whose sum is σ = 1685672. Its totient is φ = 842832.

The previous prime is 1264231. The next prime is 1264259. The reversal of 1264251 is 1524621.

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

It is not a de Polignac number, because 1264251 - 2¹¹ = 1262203 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1264259) 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, 210706 + ... + 210711.

It is an arithmetic number, because the mean of its divisors is an integer number (421418).

2^1264251 is an apocalyptic number.

1264251 is a deficient number, since it is larger than the sum of its proper divisors (421421).

1264251 is an equidigital number, since it uses as much as digits as its factorization.

1264251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 421420.

The product of its digits is 480, while the sum is 21.

The square root of 1264251 is about 1124.3891675038. The cubic root of 1264251 is about 108.1295598776.

Adding to 1264251 its reverse (1524621), we get a palindrome (2788872).

The spelling of 1264251 in words is "one million, two hundred sixty-four thousand, two hundred fifty-one".