1254561 has 16 divisors (see below), whose sum is σ = 2085888. Its totient is φ = 651600.

The previous prime is 1254557. The next prime is 1254577. The reversal of 1254561 is 1654521.

It is not a de Polignac number, because 1254561 - 2² = 1254557 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1254541) 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, 2485 + ... + 2946.

It is an arithmetic number, because the mean of its divisors is an integer number (130368).

2^1254561 is an apocalyptic number.

1254561 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1254561 is a deficient number, since it is larger than the sum of its proper divisors (831327).

1254561 is a wasteful number, since it uses less digits than its factorization.

1254561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5452.

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

The square root of 1254561 is about 1120.0718726939. The cubic root of 1254561 is about 107.8525938255.

The spelling of 1254561 in words is "one million, two hundred fifty-four thousand, five hundred sixty-one".