87403523 has 2 divisors, whose sum is σ = 87403524. Its totient is φ = 87403522.

The previous prime is 87403501. The next prime is 87403543. The reversal of 87403523 is 32530478.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87403523 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 87403523.

It is not a weakly prime, because it can be changed into another prime (87403543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43701761 + 43701762.

It is an arithmetic number, because the mean of its divisors is an integer number (43701762).

Almost surely, 2^87403523 is an apocalyptic number.

87403523 is a deficient number, since it is larger than the sum of its proper divisors (1).

87403523 is an equidigital number, since it uses as much as digits as its factorization.

87403523 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20160, while the sum is 32.

The square root of 87403523 is about 9348.9851320879. The cubic root of 87403523 is about 443.7887745527.

The spelling of 87403523 in words is "eighty-seven million, four hundred three thousand, five hundred twenty-three".