26721051 has 16 divisors (see below), whose sum is σ = 41585664. Its totient is φ = 14943744.

The previous prime is 26721047. The next prime is 26721073. The reversal of 26721051 is 15012762.

It is not a de Polignac number, because 26721051 - 2² = 26721047 is a prime.

It is not an unprimeable number, because it can be changed into a prime (26721031) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12550 + ... + 14523.

It is an arithmetic number, because the mean of its divisors is an integer number (2599104).

Almost surely, 2^26721051 is an apocalyptic number.

26721051 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

26721051 is a deficient number, since it is larger than the sum of its proper divisors (14864613).

26721051 is a wasteful number, since it uses less digits than its factorization.

26721051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27130.

The product of its (nonzero) digits is 840, while the sum is 24.

The square root of 26721051 is about 5169.2408533555. The cubic root of 26721051 is about 298.9632770341.

The spelling of 26721051 in words is "twenty-six million, seven hundred twenty-one thousand, fifty-one".