87542837 has 2 divisors, whose sum is σ = 87542838. Its totient is φ = 87542836.

The previous prime is 87542821. The next prime is 87542849. The reversal of 87542837 is 73824578.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 57851236 + 29691601 = 7606^2 + 5449^2 .

It is a cyclic number.

It is not a de Polignac number, because 87542837 - 2⁴ = 87542821 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87542237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43771418 + 43771419.

It is an arithmetic number, because the mean of its divisors is an integer number (43771419).

Almost surely, 2^87542837 is an apocalyptic number.

It is an amenable number.

87542837 is a deficient number, since it is larger than the sum of its proper divisors (1).

87542837 is an equidigital number, since it uses as much as digits as its factorization.

87542837 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 376320, while the sum is 44.

The square root of 87542837 is about 9356.4329207236. The cubic root of 87542837 is about 444.0244369447.

The spelling of 87542837 in words is "eighty-seven million, five hundred forty-two thousand, eight hundred thirty-seven".