131774551 has 2 divisors, whose sum is σ = 131774552. Its totient is φ = 131774550.

The previous prime is 131774527. The next prime is 131774593. The reversal of 131774551 is 155477131.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (155477131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 131774551 - 2⁹ = 131774039 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131774051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65887275 + 65887276.

It is an arithmetic number, because the mean of its divisors is an integer number (65887276).

Almost surely, 2^131774551 is an apocalyptic number.

131774551 is a deficient number, since it is larger than the sum of its proper divisors (1).

131774551 is an equidigital number, since it uses as much as digits as its factorization.

131774551 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14700, while the sum is 34.

The square root of 131774551 is about 11479.3096917890. The cubic root of 131774551 is about 508.8742965499.

The spelling of 131774551 in words is "one hundred thirty-one million, seven hundred seventy-four thousand, five hundred fifty-one".