87252637 has 2 divisors, whose sum is σ = 87252638. Its totient is φ = 87252636.

The previous prime is 87252601. The next prime is 87252689. The reversal of 87252637 is 73625278.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 56715961 + 30536676 = 7531^2 + 5526^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87252637 is a prime.

It is a super-2 number, since 2×87252637² = 15226045326907538, 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 87252637.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87252037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43626318 + 43626319.

It is an arithmetic number, because the mean of its divisors is an integer number (43626319).

Almost surely, 2^87252637 is an apocalyptic number.

It is an amenable number.

87252637 is a deficient number, since it is larger than the sum of its proper divisors (1).

87252637 is an equidigital number, since it uses as much as digits as its factorization.

87252637 is an evil number, because the sum of its binary digits is even.

The product of its digits is 141120, while the sum is 40.

The square root of 87252637 is about 9340.9120004419. The cubic root of 87252637 is about 443.5332544091.

The spelling of 87252637 in words is "eighty-seven million, two hundred fifty-two thousand, six hundred thirty-seven".