87252705 has 12 divisors (see below), whose sum is σ = 151238100. Its totient is φ = 46534752.

The previous prime is 87252703. The next prime is 87252713. The reversal of 87252705 is 50725278.

It can be written as a sum of positive squares in 2 ways, for example, as 34152336 + 53100369 = 5844^2 + 7287^2 .

It is not a de Polignac number, because 87252705 - 2¹ = 87252703 is a prime.

It is a super-2 number, since 2×87252705² = 15226069059634050, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a self number, because there is not a number n which added to its sum of digits gives 87252705.

It is not an unprimeable number, because it can be changed into a prime (87252701) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 969430 + ... + 969519.

It is an arithmetic number, because the mean of its divisors is an integer number (12603175).

Almost surely, 2^87252705 is an apocalyptic number.

It is an amenable number.

87252705 is a deficient number, since it is larger than the sum of its proper divisors (63985395).

87252705 is a wasteful number, since it uses less digits than its factorization.

87252705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1938960 (or 1938957 counting only the distinct ones).

The product of its (nonzero) digits is 39200, while the sum is 36.

The square root of 87252705 is about 9340.9156403428. The cubic root of 87252705 is about 443.5333696310.

The spelling of 87252705 in words is "eighty-seven million, two hundred fifty-two thousand, seven hundred five".