2615257 has 2 divisors, whose sum is σ = 2615258. Its totient is φ = 2615256.

The previous prime is 2615243. The next prime is 2615279. The reversal of 2615257 is 7525162.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2322576 + 292681 = 1524^2 + 541^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2615257 is a prime.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (2615227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1307628 + 1307629.

It is an arithmetic number, because the mean of its divisors is an integer number (1307629).

2^2615257 is an apocalyptic number.

It is an amenable number.

2615257 is a deficient number, since it is larger than the sum of its proper divisors (1).

2615257 is an equidigital number, since it uses as much as digits as its factorization.

2615257 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4200, while the sum is 28.

The square root of 2615257 is about 1617.1756243525. The cubic root of 2615257 is about 137.7753293057.

The spelling of 2615257 in words is "two million, six hundred fifteen thousand, two hundred fifty-seven".