788521541 has 4 divisors (see below), whose sum is σ = 809832972. Its totient is φ = 767210112.

The previous prime is 788521519. The next prime is 788521543. The reversal of 788521541 is 145125887.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 583029316 + 205492225 = 24146^2 + 14335^2 .

It is a cyclic number.

It is not a de Polignac number, because 788521541 - 2⁶ = 788521477 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (788521543) 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, 10655660 + ... + 10655733.

It is an arithmetic number, because the mean of its divisors is an integer number (202458243).

Almost surely, 2^788521541 is an apocalyptic number.

It is an amenable number.

788521541 is a deficient number, since it is larger than the sum of its proper divisors (21311431).

788521541 is a wasteful number, since it uses less digits than its factorization.

788521541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21311430.

The product of its digits is 89600, while the sum is 41.

The square root of 788521541 is about 28080.6257230853. The cubic root of 788521541 is about 923.8565040965.

The spelling of 788521541 in words is "seven hundred eighty-eight million, five hundred twenty-one thousand, five hundred forty-one".