87180941 has 2 divisors, whose sum is σ = 87180942. Its totient is φ = 87180940.

The previous prime is 87180881. The next prime is 87180953. The reversal of 87180941 is 14908178.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 45630025 + 41550916 = 6755^2 + 6446^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87180941 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 87180895 and 87180904.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87180241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43590470 + 43590471.

It is an arithmetic number, because the mean of its divisors is an integer number (43590471).

Almost surely, 2^87180941 is an apocalyptic number.

It is an amenable number.

87180941 is a deficient number, since it is larger than the sum of its proper divisors (1).

87180941 is an equidigital number, since it uses as much as digits as its factorization.

87180941 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16128, while the sum is 38.

The square root of 87180941 is about 9337.0734708473. The cubic root of 87180941 is about 443.4117364995.

The spelling of 87180941 in words is "eighty-seven million, one hundred eighty thousand, nine hundred forty-one".