26315977 has 2 divisors, whose sum is σ = 26315978. Its totient is φ = 26315976.

The previous prime is 26315951. The next prime is 26315981. The reversal of 26315977 is 77951362.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17007376 + 9308601 = 4124^2 + 3051^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26315977 is a prime.

It is not a weakly prime, because it can be changed into another prime (26318977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13157988 + 13157989.

It is an arithmetic number, because the mean of its divisors is an integer number (13157989).

Almost surely, 2^26315977 is an apocalyptic number.

It is an amenable number.

26315977 is a deficient number, since it is larger than the sum of its proper divisors (1).

26315977 is an equidigital number, since it uses as much as digits as its factorization.

26315977 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 79380, while the sum is 40.

The square root of 26315977 is about 5129.9100381976. The cubic root of 26315977 is about 297.4448811569. Note that the first 3 decimals are identical.

The spelling of 26315977 in words is "twenty-six million, three hundred fifteen thousand, nine hundred seventy-seven".