87051783 has 24 divisors (see below), whose sum is σ = 145408368. Its totient is φ = 45916416.

The previous prime is 87051773. The next prime is 87051791. The reversal of 87051783 is 38715078.

It is not a de Polignac number, because 87051783 - 2⁶ = 87051719 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87051743) 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 in 23 ways as a sum of consecutive naturals, for example, 20866 + ... + 24687.

It is an arithmetic number, because the mean of its divisors is an integer number (6058682).

Almost surely, 2^87051783 is an apocalyptic number.

87051783 is a deficient number, since it is larger than the sum of its proper divisors (58356585).

87051783 is a wasteful number, since it uses less digits than its factorization.

87051783 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45583 (or 45576 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 39.

The square root of 87051783 is about 9330.1545003285. The cubic root of 87051783 is about 443.1926577364.

The spelling of 87051783 in words is "eighty-seven million, fifty-one thousand, seven hundred eighty-three".