87215153 has 2 divisors, whose sum is σ = 87215154. Its totient is φ = 87215152.

The previous prime is 87215143. The next prime is 87215171. The reversal of 87215153 is 35151278.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 75463969 + 11751184 = 8687^2 + 3428^2 .

It is a cyclic number.

It is not a de Polignac number, because 87215153 - 2¹⁶ = 87149617 is a prime.

It is equal to p_5064971 and since 87215153 and 5064971 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (87215113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43607576 + 43607577.

It is an arithmetic number, because the mean of its divisors is an integer number (43607577).

Almost surely, 2^87215153 is an apocalyptic number.

It is an amenable number.

87215153 is a deficient number, since it is larger than the sum of its proper divisors (1).

87215153 is an equidigital number, since it uses as much as digits as its factorization.

87215153 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8400, while the sum is 32.

The square root of 87215153 is about 9338.9053427048. The cubic root of 87215153 is about 443.4697308969.

The spelling of 87215153 in words is "eighty-seven million, two hundred fifteen thousand, one hundred fifty-three".