26501157 has 12 divisors (see below), whose sum is σ = 39599820. Its totient is φ = 17058048.

The previous prime is 26501149. The next prime is 26501159. The reversal of 26501157 is 75110562.

26501157 is a `hidden beast` number, since 2 + 6 + 501 + 157 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 20196036 + 6305121 = 4494^2 + 2511^2 .

It is not a de Polignac number, because 26501157 - 2³ = 26501149 is a prime.

It is a super-2 number, since 2×26501157² = 1404622644677298, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 26501157.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26501159) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 50508 + ... + 51029.

It is an arithmetic number, because the mean of its divisors is an integer number (3299985).

Almost surely, 2^26501157 is an apocalyptic number.

It is an amenable number.

26501157 is a deficient number, since it is larger than the sum of its proper divisors (13098663).

26501157 is a wasteful number, since it uses less digits than its factorization.

26501157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101572 (or 101569 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 27.

The square root of 26501157 is about 5147.9274470412. The cubic root of 26501157 is about 298.1409367428.

The spelling of 26501157 in words is "twenty-six million, five hundred one thousand, one hundred fifty-seven".