541778687 has 2 divisors, whose sum is σ = 541778688. Its totient is φ = 541778686.

The previous prime is 541778647. The next prime is 541778701. The reversal of 541778687 is 786877145.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 541778687 - 2¹⁸ = 541516543 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (541778617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 270889343 + 270889344.

It is an arithmetic number, because the mean of its divisors is an integer number (270889344).

Almost surely, 2^541778687 is an apocalyptic number.

541778687 is a deficient number, since it is larger than the sum of its proper divisors (1).

541778687 is an equidigital number, since it uses as much as digits as its factorization.

541778687 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2634240, while the sum is 53.

The square root of 541778687 is about 23276.1398646769. The cubic root of 541778687 is about 815.2183975657.

The spelling of 541778687 in words is "five hundred forty-one million, seven hundred seventy-eight thousand, six hundred eighty-seven".