13531954 has 4 divisors (see below), whose sum is σ = 20297934. Its totient is φ = 6765976.

The previous prime is 13531943. The next prime is 13531957. The reversal of 13531954 is 45913531.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 12766329 + 765625 = 3573^2 + 875^2 .

It is a super-2 number, since 2×13531954² = 366227558116232, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13531957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3382987 + ... + 3382990.

Almost surely, 2^13531954 is an apocalyptic number.

13531954 is a deficient number, since it is larger than the sum of its proper divisors (6765980).

13531954 is an equidigital number, since it uses as much as digits as its factorization.

13531954 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6765979.

The product of its digits is 8100, while the sum is 31.

The square root of 13531954 is about 3678.5804327213. The cubic root of 13531954 is about 238.2978757408.

The spelling of 13531954 in words is "thirteen million, five hundred thirty-one thousand, nine hundred fifty-four".