136457 has 4 divisors (see below), whose sum is σ = 138756. Its totient is φ = 134160.

The previous prime is 136453. The next prime is 136463. The reversal of 136457 is 754631.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 48841 + 87616 = 221^2 + 296^2 .

It is a cyclic number.

It is not a de Polignac number, because 136457 - 2² = 136453 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 136457.

It is not an unprimeable number, because it can be changed into a prime (136453) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1058 + ... + 1179.

It is an arithmetic number, because the mean of its divisors is an integer number (34689).

2¹³⁶⁴⁵⁷ is an apocalyptic number.

It is an amenable number.

136457 is a deficient number, since it is larger than the sum of its proper divisors (2299).

136457 is an equidigital number, since it uses as much as digits as its factorization.

136457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2298.

The product of its digits is 2520, while the sum is 26.

The square root of 136457 is about 369.4008662686. The cubic root of 136457 is about 51.4831691631.

The spelling of 136457 in words is "one hundred thirty-six thousand, four hundred fifty-seven".