13530957 has 8 divisors (see below), whose sum is σ = 19681440. Its totient is φ = 8200560.

The previous prime is 13530941. The next prime is 13530989. The reversal of 13530957 is 75903531.

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

It is not a de Polignac number, because 13530957 - 2⁴ = 13530941 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33), and also a Moran number because the ratio is a prime number: 410029 = 13530957 / (1 + 3 + 5 + 3 + 0 + 9 + 5 + 7).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13530457) 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, 204982 + ... + 205047.

It is an arithmetic number, because the mean of its divisors is an integer number (2460180).

Almost surely, 2^13530957 is an apocalyptic number.

It is an amenable number.

13530957 is a deficient number, since it is larger than the sum of its proper divisors (6150483).

13530957 is a wasteful number, since it uses less digits than its factorization.

13530957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 410043.

The product of its (nonzero) digits is 14175, while the sum is 33.

The square root of 13530957 is about 3678.4449159937. Note that the first 3 decimals coincide. The cubic root of 13530957 is about 238.2920232030.

The spelling of 13530957 in words is "thirteen million, five hundred thirty thousand, nine hundred fifty-seven".