87438503 has 2 divisors, whose sum is σ = 87438504. Its totient is φ = 87438502.

The previous prime is 87438493. The next prime is 87438521. The reversal of 87438503 is 30583478.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 87438503 - 2⁴ = 87438487 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87438563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43719251 + 43719252.

It is an arithmetic number, because the mean of its divisors is an integer number (43719252).

Almost surely, 2^87438503 is an apocalyptic number.

87438503 is a deficient number, since it is larger than the sum of its proper divisors (1).

87438503 is an equidigital number, since it uses as much as digits as its factorization.

87438503 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 80640, while the sum is 38.

The square root of 87438503 is about 9350.8557362415. The cubic root of 87438503 is about 443.8479699578.

The spelling of 87438503 in words is "eighty-seven million, four hundred thirty-eight thousand, five hundred three".