2515897 has 2 divisors, whose sum is σ = 2515898. Its totient is φ = 2515896.

The previous prime is 2515879. The next prime is 2515907. The reversal of 2515897 is 7985152.

Together with previous prime (2515879) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1893376 + 622521 = 1376^2 + 789^2 .

It is a cyclic number.

It is not a de Polignac number, because 2515897 - 2¹⁹ = 1991609 is a prime.

It is a Chen prime.

2515897 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (2515817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1257948 + 1257949.

It is an arithmetic number, because the mean of its divisors is an integer number (1257949).

2^2515897 is an apocalyptic number.

It is an amenable number.

2515897 is a deficient number, since it is larger than the sum of its proper divisors (1).

2515897 is an equidigital number, since it uses as much as digits as its factorization.

2515897 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25200, while the sum is 37.

The square root of 2515897 is about 1586.1579366507. The cubic root of 2515897 is about 136.0079472000.

The spelling of 2515897 in words is "two million, five hundred fifteen thousand, eight hundred ninety-seven".