26172461 has 4 divisors (see below), whose sum is σ = 29911392. Its totient is φ = 22433532.

The previous prime is 26172457. The next prime is 26172491. The reversal of 26172461 is 16427162.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 16427162 = 2 ⋅8213581.

It is a cyclic number.

It is not a de Polignac number, because 26172461 - 2² = 26172457 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26172491) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1869455 + ... + 1869468.

It is an arithmetic number, because the mean of its divisors is an integer number (7477848).

Almost surely, 2^26172461 is an apocalyptic number.

It is an amenable number.

26172461 is a deficient number, since it is larger than the sum of its proper divisors (3738931).

26172461 is an equidigital number, since it uses as much as digits as its factorization.

26172461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3738930.

The product of its digits is 4032, while the sum is 29.

The square root of 26172461 is about 5115.9027551352. The cubic root of 26172461 is about 296.9031831564.

The spelling of 26172461 in words is "twenty-six million, one hundred seventy-two thousand, four hundred sixty-one".