13531051 has 4 divisors (see below), whose sum is σ = 13545000. Its totient is φ = 13517104.

The previous prime is 13531043. The next prime is 13531057. The reversal of 13531051 is 15013531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15013531 = 13 ⋅1154887.

It is a cyclic number.

It is not a de Polignac number, because 13531051 - 2³ = 13531043 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13531057) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5401 + ... + 7498.

It is an arithmetic number, because the mean of its divisors is an integer number (3386250).

Almost surely, 2^13531051 is an apocalyptic number.

13531051 is a deficient number, since it is larger than the sum of its proper divisors (13949).

13531051 is a wasteful number, since it uses less digits than its factorization.

13531051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13948.

The product of its (nonzero) digits is 225, while the sum is 19.

The square root of 13531051 is about 3678.4576931100. The cubic root of 13531051 is about 238.2925750092.

Adding to 13531051 its reverse (15013531), we get a palindrome (28544582).

The spelling of 13531051 in words is "thirteen million, five hundred thirty-one thousand, fifty-one".