136251061 has 4 divisors (see below), whose sum is σ = 137324032. Its totient is φ = 135178092.

The previous prime is 136251043. The next prime is 136251097. The reversal of 136251061 is 160152631.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 160152631 = 17 ⋅9420743.

It is a cyclic number.

It is not a de Polignac number, because 136251061 - 2¹⁵ = 136218293 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136251961) 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, 536295 + ... + 536548.

It is an arithmetic number, because the mean of its divisors is an integer number (34331008).

Almost surely, 2^136251061 is an apocalyptic number.

It is an amenable number.

136251061 is a deficient number, since it is larger than the sum of its proper divisors (1072971).

136251061 is a wasteful number, since it uses less digits than its factorization.

136251061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1072970.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 136251061 is about 11672.6629780869. The cubic root of 136251061 is about 514.5725689644.

The spelling of 136251061 in words is "one hundred thirty-six million, two hundred fifty-one thousand, sixty-one".