136131555 has 32 divisors (see below), whose sum is σ = 254016000. Its totient is φ = 62229216.

The previous prime is 136131551. The next prime is 136131559. The reversal of 136131555 is 555131631.

136131555 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (136131551) and next prime (136131559).

It is not a de Polignac number, because 136131555 - 2² = 136131551 is a prime.

It is not an unprimeable number, because it can be changed into a prime (136131551) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8085 + ... + 18374.

It is an arithmetic number, because the mean of its divisors is an integer number (7938000).

Almost surely, 2^136131555 is an apocalyptic number.

136131555 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

136131555 is a deficient number, since it is larger than the sum of its proper divisors (117884445).

136131555 is an equidigital number, since it uses as much as digits as its factorization.

136131555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26488 (or 26474 counting only the distinct ones).

The product of its digits is 6750, while the sum is 30.

The square root of 136131555 is about 11667.5428004357. The cubic root of 136131555 is about 514.4220808466.

The spelling of 136131555 in words is "one hundred thirty-six million, one hundred thirty-one thousand, five hundred fifty-five".