2572121 has 2 divisors, whose sum is σ = 2572122. Its totient is φ = 2572120.

The previous prime is 2572109. The next prime is 2572123. The reversal of 2572121 is 1212752.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2446096 + 126025 = 1564^2 + 355^2 .

It is a cyclic number.

It is not a de Polignac number, because 2572121 - 2⁶ = 2572057 is a prime.

Together with 2572123, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 2572093 and 2572102.

It is not a weakly prime, because it can be changed into another prime (2572123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1286060 + 1286061.

It is an arithmetic number, because the mean of its divisors is an integer number (1286061).

2^2572121 is an apocalyptic number.

It is an amenable number.

2572121 is a deficient number, since it is larger than the sum of its proper divisors (1).

2572121 is an equidigital number, since it uses as much as digits as its factorization.

2572121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 280, while the sum is 20.

The square root of 2572121 is about 1603.7833394820. The cubic root of 2572121 is about 137.0136381543.

Adding to 2572121 its reverse (1212752), we get a palindrome (3784873).

The spelling of 2572121 in words is "two million, five hundred seventy-two thousand, one hundred twenty-one".