136356401 has 4 divisors (see below), whose sum is σ = 136432704. Its totient is φ = 136280100.

The previous prime is 136356379. The next prime is 136356419. The reversal of 136356401 is 104653631.

It is a happy number.

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: 104653631 = 47 ⋅2226673.

It is a cyclic number.

It is not a de Polignac number, because 136356401 - 2¹⁰ = 136355377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (136356421) 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, 35405 + ... + 39066.

It is an arithmetic number, because the mean of its divisors is an integer number (34108176).

Almost surely, 2^136356401 is an apocalyptic number.

It is an amenable number.

136356401 is a deficient number, since it is larger than the sum of its proper divisors (76303).

136356401 is an equidigital number, since it uses as much as digits as its factorization.

136356401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76302.

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 136356401 is about 11677.1743585510. The cubic root of 136356401 is about 514.7051455741.

The spelling of 136356401 in words is "one hundred thirty-six million, three hundred fifty-six thousand, four hundred one".