2587531 has 2 divisors, whose sum is σ = 2587532. Its totient is φ = 2587530.

The previous prime is 2587499. The next prime is 2587537. The reversal of 2587531 is 1357852.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2587531 - 2⁵ = 2587499 is a prime.

It is a super-2 number, since 2×2587531² = 13390633351922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2587493 and 2587502.

It is not a weakly prime, because it can be changed into another prime (2587537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1293765 + 1293766.

It is an arithmetic number, because the mean of its divisors is an integer number (1293766).

2^2587531 is an apocalyptic number.

2587531 is a deficient number, since it is larger than the sum of its proper divisors (1).

2587531 is an equidigital number, since it uses as much as digits as its factorization.

2587531 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8400, while the sum is 31.

The square root of 2587531 is about 1608.5804300687. The cubic root of 2587531 is about 137.2867172721.

The spelling of 2587531 in words is "two million, five hundred eighty-seven thousand, five hundred thirty-one".