2563121 has 8 divisors (see below), whose sum is σ = 2808000. Its totient is φ = 2320240.

The previous prime is 2563117. The next prime is 2563139. The reversal of 2563121 is 1213652.

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 2563121 - 2² = 2563117 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2563093 and 2563102.

It is not an unprimeable number, because it can be changed into a prime (2563151) 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, 3980 + ... + 4578.

It is an arithmetic number, because the mean of its divisors is an integer number (351000).

2^2563121 is an apocalyptic number.

It is an amenable number.

2563121 is a deficient number, since it is larger than the sum of its proper divisors (244879).

2563121 is a wasteful number, since it uses less digits than its factorization.

2563121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 999.

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

The square root of 2563121 is about 1600.9750154203. The cubic root of 2563121 is about 136.8536451884.

Adding to 2563121 its reverse (1213652), we get a palindrome (3776773).

It can be divided in two parts, 25631 and 21, that added together give a palindrome (25652).

The spelling of 2563121 in words is "two million, five hundred sixty-three thousand, one hundred twenty-one".