87025117 has 2 divisors, whose sum is σ = 87025118. Its totient is φ = 87025116.

The previous prime is 87025079. The next prime is 87025121. The reversal of 87025117 is 71152078.

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., 62631396 + 24393721 = 7914^2 + 4939^2 .

It is a cyclic number.

It is not a de Polignac number, because 87025117 - 2¹⁹ = 86500829 is a prime.

It is a Chen prime.

It is equal to p_5054593 and since 87025117 and 5054593 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87026117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43512558 + 43512559.

It is an arithmetic number, because the mean of its divisors is an integer number (43512559).

Almost surely, 2^87025117 is an apocalyptic number.

It is an amenable number.

87025117 is a deficient number, since it is larger than the sum of its proper divisors (1).

87025117 is an equidigital number, since it uses as much as digits as its factorization.

87025117 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3920, while the sum is 31.

The square root of 87025117 is about 9328.7253684520. The cubic root of 87025117 is about 443.1473996845.

The spelling of 87025117 in words is "eighty-seven million, twenty-five thousand, one hundred seventeen".