787541 has 2 divisors, whose sum is σ = 787542. Its totient is φ = 787540.

The previous prime is 787537. The next prime is 787547. The reversal of 787541 is 145787.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 758641 + 28900 = 871^2 + 170^2 .

It is a cyclic number.

It is not a de Polignac number, because 787541 - 2² = 787537 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 787498 and 787507.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (787547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 393770 + 393771.

It is an arithmetic number, because the mean of its divisors is an integer number (393771).

2⁷⁸⁷⁵⁴¹ is an apocalyptic number.

It is an amenable number.

787541 is a deficient number, since it is larger than the sum of its proper divisors (1).

787541 is an equidigital number, since it uses as much as digits as its factorization.

787541 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7840, while the sum is 32.

The square root of 787541 is about 887.4350680472. The cubic root of 787541 is about 92.3473401084.

The spelling of 787541 in words is "seven hundred eighty-seven thousand, five hundred forty-one".