87241249 has 2 divisors, whose sum is σ = 87241250. Its totient is φ = 87241248.

The previous prime is 87241243. The next prime is 87241261. The reversal of 87241249 is 94214278.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51624225 + 35617024 = 7185^2 + 5968^2 .

It is a cyclic number.

It is not a de Polignac number, because 87241249 - 2¹³ = 87233057 is a prime.

It is a super-2 number, since 2×87241249² = 15222071054160002, which contains 22 as substring.

It is a nialpdrome in base 16.

It is not a weakly prime, because it can be changed into another prime (87241243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43620624 + 43620625.

It is an arithmetic number, because the mean of its divisors is an integer number (43620625).

Almost surely, 2^87241249 is an apocalyptic number.

It is an amenable number.

87241249 is a deficient number, since it is larger than the sum of its proper divisors (1).

87241249 is an equidigital number, since it uses as much as digits as its factorization.

87241249 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 32256, while the sum is 37.

The square root of 87241249 is about 9340.3024040981. The cubic root of 87241249 is about 443.5139572790.

The spelling of 87241249 in words is "eighty-seven million, two hundred forty-one thousand, two hundred forty-nine".