136554931 has 4 divisors (see below), whose sum is σ = 144587592. Its totient is φ = 128522272.

The previous prime is 136554923. The next prime is 136554937. The reversal of 136554931 is 139455631.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 139455631 = 7 ⋅19922233.

It is a cyclic number.

It is not a de Polignac number, because 136554931 - 2³ = 136554923 is a prime.

It is a super-2 number, since 2×136554931² = 37294498360829522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (136554937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4016305 + ... + 4016338.

It is an arithmetic number, because the mean of its divisors is an integer number (36146898).

Almost surely, 2^136554931 is an apocalyptic number.

136554931 is a deficient number, since it is larger than the sum of its proper divisors (8032661).

136554931 is an equidigital number, since it uses as much as digits as its factorization.

136554931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8032660.

The product of its digits is 48600, while the sum is 37.

The square root of 136554931 is about 11685.6720388688. The cubic root of 136554931 is about 514.9548218137.

The spelling of 136554931 in words is "one hundred thirty-six million, five hundred fifty-four thousand, nine hundred thirty-one".