87539297 has 2 divisors, whose sum is σ = 87539298. Its totient is φ = 87539296.

The previous prime is 87539293. The next prime is 87539323. The reversal of 87539297 is 79293578.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 78872161 + 8667136 = 8881^2 + 2944^2 .

It is a cyclic number.

It is not a de Polignac number, because 87539297 - 2² = 87539293 is a prime.

It is not a weakly prime, because it can be changed into another prime (87539293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43769648 + 43769649.

It is an arithmetic number, because the mean of its divisors is an integer number (43769649).

Almost surely, 2^87539297 is an apocalyptic number.

It is an amenable number.

87539297 is a deficient number, since it is larger than the sum of its proper divisors (1).

87539297 is an equidigital number, since it uses as much as digits as its factorization.

87539297 is an evil number, because the sum of its binary digits is even.

The product of its digits is 952560, while the sum is 50.

The square root of 87539297 is about 9356.2437441529. The cubic root of 87539297 is about 444.0184518074.

The spelling of 87539297 in words is "eighty-seven million, five hundred thirty-nine thousand, two hundred ninety-seven".