87461149 has 2 divisors, whose sum is σ = 87461150. Its totient is φ = 87461148.

The previous prime is 87461131. The next prime is 87461173. The reversal of 87461149 is 94116478.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 86211225 + 1249924 = 9285^2 + 1118^2 .

It is a cyclic number.

It is not a de Polignac number, because 87461149 - 2²¹ = 85363997 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87461119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43730574 + 43730575.

It is an arithmetic number, because the mean of its divisors is an integer number (43730575).

Almost surely, 2^87461149 is an apocalyptic number.

It is an amenable number.

87461149 is a deficient number, since it is larger than the sum of its proper divisors (1).

87461149 is an equidigital number, since it uses as much as digits as its factorization.

87461149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48384, while the sum is 40.

The square root of 87461149 is about 9352.0665630651. The cubic root of 87461149 is about 443.8862845567.

The spelling of 87461149 in words is "eighty-seven million, four hundred sixty-one thousand, one hundred forty-nine".