26561051 has 8 divisors (see below), whose sum is σ = 29169408. Its totient is φ = 23985000.

The previous prime is 26561027. The next prime is 26561083. The reversal of 26561051 is 15016562.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26561051 is a prime.

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 26561051.

It is not an unprimeable number, because it can be changed into a prime (26561551) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6335 + ... + 9656.

It is an arithmetic number, because the mean of its divisors is an integer number (3646176).

Almost surely, 2^26561051 is an apocalyptic number.

26561051 is a deficient number, since it is larger than the sum of its proper divisors (2608357).

26561051 is a wasteful number, since it uses less digits than its factorization.

26561051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16153.

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 26561051 is about 5153.7414564567. The cubic root of 26561051 is about 298.3653724490.

It can be divided in two parts, 265 and 61051, that added together give a palindrome (61316).

The spelling of 26561051 in words is "twenty-six million, five hundred sixty-one thousand, fifty-one".