2523557 has 2 divisors, whose sum is σ = 2523558. Its totient is φ = 2523556.

The previous prime is 2523539. The next prime is 2523569. The reversal of 2523557 is 7553252.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2292196 + 231361 = 1514^2 + 481^2 .

It is a cyclic number.

It is not a de Polignac number, because 2523557 - 2²⁰ = 1474981 is a prime.

It is a Chen prime.

It is an Ulam number.

It is a d-powerful number, because it can be written as 2² + 5³ + 2²¹ + 3⁹ + 5⁶ + 5⁸ + 7³ .

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2523517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1261778 + 1261779.

It is an arithmetic number, because the mean of its divisors is an integer number (1261779).

2^2523557 is an apocalyptic number.

It is an amenable number.

2523557 is a deficient number, since it is larger than the sum of its proper divisors (1).

2523557 is an equidigital number, since it uses as much as digits as its factorization.

2523557 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10500, while the sum is 29.

The square root of 2523557 is about 1588.5707412640. The cubic root of 2523557 is about 136.1458390847.

The spelling of 2523557 in words is "two million, five hundred twenty-three thousand, five hundred fifty-seven".