155655158 has 4 divisors (see below), whose sum is σ = 233482740. Its totient is φ = 77827578.

The previous prime is 155655131. The next prime is 155655167. The reversal of 155655158 is 851556551.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 851556551 = 29 ⋅29364019.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38913788 + ... + 38913791.

It is an arithmetic number, because the mean of its divisors is an integer number (58370685).

Almost surely, 2^155655158 is an apocalyptic number.

155655158 is a deficient number, since it is larger than the sum of its proper divisors (77827582).

155655158 is an equidigital number, since it uses as much as digits as its factorization.

155655158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77827581.

The product of its digits is 150000, while the sum is 41.

The square root of 155655158 is about 12476.1836312231. The cubic root of 155655158 is about 537.9243109250.

The spelling of 155655158 in words is "one hundred fifty-five million, six hundred fifty-five thousand, one hundred fifty-eight".