26651431 has 4 divisors (see below), whose sum is σ = 26757864. Its totient is φ = 26545000.

The previous prime is 26651407. The next prime is 26651437. The reversal of 26651431 is 13415662.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 26651431 - 2⁹ = 26650919 is a prime.

It is a super-2 number, since 2×26651431² = 1420597548695522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 26651431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26651437) 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, 52840 + ... + 53341.

It is an arithmetic number, because the mean of its divisors is an integer number (6689466).

Almost surely, 2^26651431 is an apocalyptic number.

26651431 is a deficient number, since it is larger than the sum of its proper divisors (106433).

26651431 is a wasteful number, since it uses less digits than its factorization.

26651431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106432.

The product of its digits is 4320, while the sum is 28.

The square root of 26651431 is about 5162.5023970939. The cubic root of 26651431 is about 298.7034079404.

It can be divided in two parts, 2665 and 1431, that added together give a 12-th power (4096 = 2¹²).

The spelling of 26651431 in words is "twenty-six million, six hundred fifty-one thousand, four hundred thirty-one".