87525247 has 2 divisors, whose sum is σ = 87525248. Its totient is φ = 87525246.

The previous prime is 87525241. The next prime is 87525257. The reversal of 87525247 is 74252578.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 87525247 - 2¹⁵ = 87492479 is a prime.

It is a super-2 number, since 2×87525247² = 15321337724822018, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87525241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43762623 + 43762624.

It is an arithmetic number, because the mean of its divisors is an integer number (43762624).

Almost surely, 2^87525247 is an apocalyptic number.

87525247 is a deficient number, since it is larger than the sum of its proper divisors (1).

87525247 is an equidigital number, since it uses as much as digits as its factorization.

87525247 is an evil number, because the sum of its binary digits is even.

The product of its digits is 156800, while the sum is 40.

The square root of 87525247 is about 9355.4928785179. The cubic root of 87525247 is about 443.9946956459.

The spelling of 87525247 in words is "eighty-seven million, five hundred twenty-five thousand, two hundred forty-seven".