12791553 has 8 divisors (see below), whose sum is σ = 17180448. Its totient is φ = 8465184.

The previous prime is 12791543. The next prime is 12791563. The reversal of 12791553 is 35519721.

It is an interprime number because it is at equal distance from previous prime (12791543) and next prime (12791563).

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

It is not a de Polignac number, because 12791553 - 2⁶ = 12791489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12791533) 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, 15151 + ... + 15972.

It is an arithmetic number, because the mean of its divisors is an integer number (2147556).

Almost surely, 2^12791553 is an apocalyptic number.

It is an amenable number.

12791553 is a deficient number, since it is larger than the sum of its proper divisors (4388895).

12791553 is a wasteful number, since it uses less digits than its factorization.

12791553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31263.

The product of its digits is 9450, while the sum is 33.

The square root of 12791553 is about 3576.5280650374. The cubic root of 12791553 is about 233.8699511133.

The spelling of 12791553 in words is "twelve million, seven hundred ninety-one thousand, five hundred fifty-three".