1251263 has 8 divisors (see below), whose sum is σ = 1394400. Its totient is φ = 1114848.

The previous prime is 1251259. The next prime is 1251287. The reversal of 1251263 is 3621521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1251263 - 2² = 1251259 is a prime.

It is a Duffinian number.

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1251463) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1283 + ... + 2036.

It is an arithmetic number, because the mean of its divisors is an integer number (174300).

2^1251263 is an apocalyptic number.

1251263 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1251263 is a deficient number, since it is larger than the sum of its proper divisors (143137).

1251263 is a wasteful number, since it uses less digits than its factorization.

1251263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3361.

The product of its digits is 360, while the sum is 20.

The square root of 1251263 is about 1118.5986769168. The cubic root of 1251263 is about 107.7580029693.

Adding to 1251263 its reverse (3621521), we get a palindrome (4872784).

The spelling of 1251263 in words is "one million, two hundred fifty-one thousand, two hundred sixty-three".