87180953 has 2 divisors, whose sum is σ = 87180954. Its totient is φ = 87180952.

The previous prime is 87180941. The next prime is 87180967. The reversal of 87180953 is 35908178.

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., 60016009 + 27164944 = 7747^2 + 5212^2 .

It is a cyclic number.

It is not a de Polignac number, because 87180953 - 2¹⁰ = 87179929 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 87180953.

It is not a weakly prime, because it can be changed into another prime (87180553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43590476 + 43590477.

It is an arithmetic number, because the mean of its divisors is an integer number (43590477).

Almost surely, 2^87180953 is an apocalyptic number.

It is an amenable number.

87180953 is a deficient number, since it is larger than the sum of its proper divisors (1).

87180953 is an equidigital number, since it uses as much as digits as its factorization.

87180953 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 60480, while the sum is 41.

The square root of 87180953 is about 9337.0741134469. The cubic root of 87180953 is about 443.4117568440.

The spelling of 87180953 in words is "eighty-seven million, one hundred eighty thousand, nine hundred fifty-three".