13001551 has 8 divisors (see below), whose sum is σ = 13520304. Its totient is φ = 12492480.

The previous prime is 13001543. The next prime is 13001557. The reversal of 13001551 is 15510031.

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 13001551 - 2³ = 13001543 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 (13001557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 381 + ... + 5113.

It is an arithmetic number, because the mean of its divisors is an integer number (1690038).

Almost surely, 2^13001551 is an apocalyptic number.

13001551 is a deficient number, since it is larger than the sum of its proper divisors (518753).

13001551 is an equidigital number, since it uses as much as digits as its factorization.

13001551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4841.

The product of its (nonzero) digits is 75, while the sum is 16.

The square root of 13001551 is about 3605.7663540501. The cubic root of 13001551 is about 235.1428194774.

Adding to 13001551 its reverse (15510031), we get a palindrome (28511582).

The spelling of 13001551 in words is "thirteen million, one thousand, five hundred fifty-one".