131554 has 4 divisors (see below), whose sum is σ = 197334. Its totient is φ = 65776.

The previous prime is 131543. The next prime is 131561. The reversal of 131554 is 455131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 455131 = 67 ⋅6793.

It can be written as a sum of positive squares in only one way, i.e., 104329 + 27225 = 323^2 + 165^2 .

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32887 + ... + 32890.

2¹³¹⁵⁵⁴ is an apocalyptic number.

131554 is a deficient number, since it is larger than the sum of its proper divisors (65780).

131554 is an equidigital number, since it uses as much as digits as its factorization.

131554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65779.

The product of its digits is 300, while the sum is 19.

The square root of 131554 is about 362.7037358506. The cubic root of 131554 is about 50.8590237129.

Adding to 131554 its reverse (455131), we get a palindrome (586685).

It can be divided in two parts, 1315 and 54, that added together give a square (1369 = 37²).

The spelling of 131554 in words is "one hundred thirty-one thousand, five hundred fifty-four".