135977554 has 8 divisors (see below), whose sum is σ = 204214860. Its totient is φ = 67905936.

The previous prime is 135977531. The next prime is 135977561. The reversal of 135977554 is 455779531.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 119793025 + 16184529 = 10945^2 + 4023^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39349 + ... + 42664.

Almost surely, 2^135977554 is an apocalyptic number.

135977554 is a deficient number, since it is larger than the sum of its proper divisors (68237306).

135977554 is an equidigital number, since it uses as much as digits as its factorization.

135977554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82844.

The product of its digits is 661500, while the sum is 46.

The square root of 135977554 is about 11660.9413856687. The cubic root of 135977554 is about 514.2280249150.

The spelling of 135977554 in words is "one hundred thirty-five million, nine hundred seventy-seven thousand, five hundred fifty-four".