136091554 has 4 divisors (see below), whose sum is σ = 204137334. Its totient is φ = 68045776.

The previous prime is 136091537. The next prime is 136091561. The reversal of 136091554 is 455190631.

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

It can be written as a sum of positive squares in only one way, i.e., 120670225 + 15421329 = 10985^2 + 3927^2 .

It is a super-2 number, since 2×136091554² = 37041822140269832, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34022887 + ... + 34022890.

Almost surely, 2^136091554 is an apocalyptic number.

136091554 is a deficient number, since it is larger than the sum of its proper divisors (68045780).

136091554 is an equidigital number, since it uses as much as digits as its factorization.

136091554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68045779.

The product of its (nonzero) digits is 16200, while the sum is 34.

The square root of 136091554 is about 11665.8284746519. The cubic root of 136091554 is about 514.3716898517.

The spelling of 136091554 in words is "one hundred thirty-six million, ninety-one thousand, five hundred fifty-four".