987265523 has 4 divisors (see below), whose sum is σ = 988384488. Its totient is φ = 986146560.

The previous prime is 987265471. The next prime is 987265537. The reversal of 987265523 is 325562789.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 325562789 = 5347 ⋅60887.

It is a cyclic number.

It is not a de Polignac number, because 987265523 - 2⁶ = 987265459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (987265583) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 558158 + ... + 559923.

It is an arithmetic number, because the mean of its divisors is an integer number (247096122).

Almost surely, 2^987265523 is an apocalyptic number.

987265523 is a deficient number, since it is larger than the sum of its proper divisors (1118965).

987265523 is a wasteful number, since it uses less digits than its factorization.

987265523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1118964.

The product of its digits is 907200, while the sum is 47.

The square root of 987265523 is about 31420.7817057437. The cubic root of 987265523 is about 995.7370272200.

The spelling of 987265523 in words is "nine hundred eighty-seven million, two hundred sixty-five thousand, five hundred twenty-three".