87151241 has 2 divisors, whose sum is σ = 87151242. Its totient is φ = 87151240.

The previous prime is 87151237. The next prime is 87151279. The reversal of 87151241 is 14215178.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 80281600 + 6869641 = 8960^2 + 2621^2 .

It is a cyclic number.

It is not a de Polignac number, because 87151241 - 2² = 87151237 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (87150241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43575620 + 43575621.

It is an arithmetic number, because the mean of its divisors is an integer number (43575621).

Almost surely, 2^87151241 is an apocalyptic number.

It is an amenable number.

87151241 is a deficient number, since it is larger than the sum of its proper divisors (1).

87151241 is an equidigital number, since it uses as much as digits as its factorization.

87151241 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2240, while the sum is 29.

The square root of 87151241 is about 9335.4829012751. The cubic root of 87151241 is about 443.3613783051.

The spelling of 87151241 in words is "eighty-seven million, one hundred fifty-one thousand, two hundred forty-one".