2515537 has 2 divisors, whose sum is σ = 2515538. Its totient is φ = 2515536.

The previous prime is 2515531. The next prime is 2515553. The reversal of 2515537 is 7355152.

It is the 648-th star number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1263376 + 1252161 = 1124^2 + 1119^2 .

It is a cyclic number.

It is not a de Polignac number, because 2515537 - 2³ = 2515529 is a prime.

It is not a weakly prime, because it can be changed into another prime (2515531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1257768 + 1257769.

It is an arithmetic number, because the mean of its divisors is an integer number (1257769).

2^2515537 is an apocalyptic number.

It is an amenable number.

2515537 is a deficient number, since it is larger than the sum of its proper divisors (1).

2515537 is an equidigital number, since it uses as much as digits as its factorization.

2515537 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5250, while the sum is 28.

The square root of 2515537 is about 1586.0444508273. The cubic root of 2515537 is about 136.0014597594.

The spelling of 2515537 in words is "two million, five hundred fifteen thousand, five hundred thirty-seven".