87445143 has 16 divisors (see below), whose sum is σ = 129692640. Its totient is φ = 58231872.

The previous prime is 87445123. The next prime is 87445153. The reversal of 87445143 is 34154478.

It is a de Polignac number, because none of the positive numbers 2^k-87445143 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 87445098 and 87445107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87445123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44755 + ... + 46667.

It is an arithmetic number, because the mean of its divisors is an integer number (8105790).

Almost surely, 2^87445143 is an apocalyptic number.

87445143 is a deficient number, since it is larger than the sum of its proper divisors (42247497).

87445143 is a wasteful number, since it uses less digits than its factorization.

87445143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3615 (or 3609 counting only the distinct ones).

The product of its digits is 53760, while the sum is 36.

The square root of 87445143 is about 9351.2107772202. The cubic root of 87445143 is about 443.8592048098.

The spelling of 87445143 in words is "eighty-seven million, four hundred forty-five thousand, one hundred forty-three".