26129057 has 2 divisors, whose sum is σ = 26129058. Its totient is φ = 26129056.

The previous prime is 26129027. The next prime is 26129071. The reversal of 26129057 is 75092162.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21446161 + 4682896 = 4631^2 + 2164^2 .

It is a cyclic number.

It is not a de Polignac number, because 26129057 - 2¹⁰ = 26128033 is a prime.

It is not a weakly prime, because it can be changed into another prime (26129027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13064528 + 13064529.

It is an arithmetic number, because the mean of its divisors is an integer number (13064529).

Almost surely, 2^26129057 is an apocalyptic number.

It is an amenable number.

26129057 is a deficient number, since it is larger than the sum of its proper divisors (1).

26129057 is an equidigital number, since it uses as much as digits as its factorization.

26129057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7560, while the sum is 32.

The square root of 26129057 is about 5111.6589283715. The cubic root of 26129057 is about 296.7389658125.

The spelling of 26129057 in words is "twenty-six million, one hundred twenty-nine thousand, fifty-seven".