26630551 has 8 divisors (see below), whose sum is σ = 28276560. Its totient is φ = 24993408.

The previous prime is 26630543. The next prime is 26630561. The reversal of 26630551 is 15503662.

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

It is a cyclic number.

It is not a de Polignac number, because 26630551 - 2³ = 26630543 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 (26630501) 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, 4600 + ... + 8626.

It is an arithmetic number, because the mean of its divisors is an integer number (3534570).

Almost surely, 2^26630551 is an apocalyptic number.

26630551 is a deficient number, since it is larger than the sum of its proper divisors (1646009).

26630551 is a wasteful number, since it uses less digits than its factorization.

26630551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4433.

The product of its (nonzero) digits is 5400, while the sum is 28.

The square root of 26630551 is about 5160.4797257619. The cubic root of 26630551 is about 298.6253814029.

The spelling of 26630551 in words is "twenty-six million, six hundred thirty thousand, five hundred fifty-one".