26542197 has 18 divisors (see below), whose sum is σ = 42142646. Its totient is φ = 16085520.

The previous prime is 26542193. The next prime is 26542199. The reversal of 26542197 is 79124562.

26542197 is a `hidden beast` number, since 26 + 542 + 1 + 97 = 666.

It can be written as a sum of positive squares in only one way, i.e., 20738916 + 5803281 = 4554^2 + 2409^2 .

It is not a de Polignac number, because 26542197 - 2² = 26542193 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26542193) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 11098 + ... + 13275.

Almost surely, 2^26542197 is an apocalyptic number.

It is an amenable number.

26542197 is a deficient number, since it is larger than the sum of its proper divisors (15600449).

26542197 is a wasteful number, since it uses less digits than its factorization.

26542197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24401 (or 24387 counting only the distinct ones).

The product of its digits is 30240, while the sum is 36.

The square root of 26542197 is about 5151.9119751797. The cubic root of 26542197 is about 298.2947588741.

It can be divided in two parts, 2654 and 2197, that added together give a triangular number (4851 = T₉₈).

The spelling of 26542197 in words is "twenty-six million, five hundred forty-two thousand, one hundred ninety-seven".