87245797 has 2 divisors, whose sum is σ = 87245798. Its totient is φ = 87245796.

The previous prime is 87245747. The next prime is 87245813. The reversal of 87245797 is 79754278.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 55368481 + 31877316 = 7441^2 + 5646^2 .

It is a cyclic number.

It is not a de Polignac number, because 87245797 - 2¹¹ = 87243749 is a prime.

It is a super-2 number, since 2×87245797² = 15223658188330418, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 87245797.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87245747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43622898 + 43622899.

It is an arithmetic number, because the mean of its divisors is an integer number (43622899).

Almost surely, 2^87245797 is an apocalyptic number.

It is an amenable number.

87245797 is a deficient number, since it is larger than the sum of its proper divisors (1).

87245797 is an equidigital number, since it uses as much as digits as its factorization.

87245797 is an evil number, because the sum of its binary digits is even.

The product of its digits is 987840, while the sum is 49.

The square root of 87245797 is about 9340.5458619933. The cubic root of 87245797 is about 443.5216641319.

The spelling of 87245797 in words is "eighty-seven million, two hundred forty-five thousand, seven hundred ninety-seven".