1251456 has 32 divisors (see below), whose sum is σ = 3325200. Its totient is φ = 417024.

The previous prime is 1251433. The next prime is 1251461. The reversal of 1251456 is 6541521.

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-2 number, since 2×1251456² = 3132284239872, which contains 22 as substring.

It is a hoax number, since the sum of its digits (24) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (24).

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, 1246 + ... + 2013.

2^1251456 is an apocalyptic number.

1251456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1251456 is an abundant number, since it is smaller than the sum of its proper divisors (2073744).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1251456 is an equidigital number, since it uses as much as digits as its factorization.

1251456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3276 (or 3264 counting only the distinct ones).

The product of its digits is 1200, while the sum is 24.

The square root of 1251456 is about 1118.6849422425. The cubic root of 1251456 is about 107.7635430317.

Adding to 1251456 its reverse (6541521), we get a palindrome (7792977).

The spelling of 1251456 in words is "one million, two hundred fifty-one thousand, four hundred fifty-six".