87525961 has 2 divisors, whose sum is σ = 87525962. Its totient is φ = 87525960.

The previous prime is 87525953. The next prime is 87525967. The reversal of 87525961 is 16952578.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 70879561 + 16646400 = 8419^2 + 4080^2 .

It is a cyclic number.

It is not a de Polignac number, because 87525961 - 2³ = 87525953 is a prime.

It is not a weakly prime, because it can be changed into another prime (87525967) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43762980 + 43762981.

It is an arithmetic number, because the mean of its divisors is an integer number (43762981).

Almost surely, 2^87525961 is an apocalyptic number.

It is an amenable number.

87525961 is a deficient number, since it is larger than the sum of its proper divisors (1).

87525961 is an equidigital number, since it uses as much as digits as its factorization.

87525961 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 151200, while the sum is 43.

The square root of 87525961 is about 9355.5310378407. The cubic root of 87525961 is about 443.9959029598.

The spelling of 87525961 in words is "eighty-seven million, five hundred twenty-five thousand, nine hundred sixty-one".