4987531 has 2 divisors, whose sum is σ = 4987532. Its totient is φ = 4987530.

The previous prime is 4987523. The next prime is 4987561. The reversal of 4987531 is 1357894.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4987531 - 2³ = 4987523 is a prime.

It is a super-2 number, since 2×4987531² = 49750930951922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (4987501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2493765 + 2493766.

It is an arithmetic number, because the mean of its divisors is an integer number (2493766).

Almost surely, 2^4987531 is an apocalyptic number.

4987531 is a deficient number, since it is larger than the sum of its proper divisors (1).

4987531 is an equidigital number, since it uses as much as digits as its factorization.

4987531 is an evil number, because the sum of its binary digits is even.

The product of its digits is 30240, while the sum is 37.

The square root of 4987531 is about 2233.2780838937. The cubic root of 4987531 is about 170.8553317431.

The spelling of 4987531 in words is "four million, nine hundred eighty-seven thousand, five hundred thirty-one".