87524417 has 2 divisors, whose sum is σ = 87524418. Its totient is φ = 87524416.

The previous prime is 87524399. The next prime is 87524441. The reversal of 87524417 is 71442578.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 53523856 + 34000561 = 7316^2 + 5831^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87524417 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (87524467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43762208 + 43762209.

It is an arithmetic number, because the mean of its divisors is an integer number (43762209).

Almost surely, 2^87524417 is an apocalyptic number.

It is an amenable number.

87524417 is a deficient number, since it is larger than the sum of its proper divisors (1).

87524417 is an equidigital number, since it uses as much as digits as its factorization.

87524417 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 62720, while the sum is 38.

The square root of 87524417 is about 9355.4485194458. The cubic root of 87524417 is about 443.9932921774.

The spelling of 87524417 in words is "eighty-seven million, five hundred twenty-four thousand, four hundred seventeen".