4557121 has 4 divisors (see below), whose sum is σ = 4565700. Its totient is φ = 4548544.

The previous prime is 4557103. The next prime is 4557143. The reversal of 4557121 is 1217554.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1784896 + 2772225 = 1336^2 + 1665^2 .

It is a cyclic number.

It is not a de Polignac number, because 4557121 - 2¹¹ = 4555073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4557521) 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, 3436 + ... + 4573.

It is an arithmetic number, because the mean of its divisors is an integer number (1141425).

Almost surely, 2^4557121 is an apocalyptic number.

It is an amenable number.

4557121 is a deficient number, since it is larger than the sum of its proper divisors (8579).

4557121 is an equidigital number, since it uses as much as digits as its factorization.

4557121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8578.

The product of its digits is 1400, while the sum is 25.

The square root of 4557121 is about 2134.7414363337. The cubic root of 4557121 is about 165.7919806882.

The spelling of 4557121 in words is "four million, five hundred fifty-seven thousand, one hundred twenty-one".