136553444 has 6 divisors (see below), whose sum is σ = 238968534. Its totient is φ = 68276720.

The previous prime is 136553407. The next prime is 136553447. The reversal of 136553444 is 444355631.

It can be written as a sum of positive squares in only one way, i.e., 136422400 + 131044 = 11680^2 + 362^2 .

It is a super-2 number, since 2×136553444² = 37293686136522272, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (136553447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17069177 + ... + 17069184.

It is an arithmetic number, because the mean of its divisors is an integer number (39828089).

Almost surely, 2^136553444 is an apocalyptic number.

It is an amenable number.

136553444 is a deficient number, since it is larger than the sum of its proper divisors (102415090).

136553444 is a wasteful number, since it uses less digits than its factorization.

136553444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34138365 (or 34138363 counting only the distinct ones).

The product of its digits is 86400, while the sum is 35.

The square root of 136553444 is about 11685.6084137712. The cubic root of 136553444 is about 514.9529526255.

The spelling of 136553444 in words is "one hundred thirty-six million, five hundred fifty-three thousand, four hundred forty-four".