85513487 has 2 divisors, whose sum is σ = 85513488. Its totient is φ = 85513486.

The previous prime is 85513459. The next prime is 85513511. The reversal of 85513487 is 78431558.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 85513487 - 2⁶ = 85513423 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85513427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42756743 + 42756744.

It is an arithmetic number, because the mean of its divisors is an integer number (42756744).

Almost surely, 2^85513487 is an apocalyptic number.

85513487 is a deficient number, since it is larger than the sum of its proper divisors (1).

85513487 is an equidigital number, since it uses as much as digits as its factorization.

85513487 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 134400, while the sum is 41.

The square root of 85513487 is about 9247.3502691312. The cubic root of 85513487 is about 440.5665686949.

The spelling of 85513487 in words is "eighty-five million, five hundred thirteen thousand, four hundred eighty-seven".