155121154 has 8 divisors (see below), whose sum is σ = 242798400. Its totient is φ = 74188356.

The previous prime is 155121151. The next prime is 155121173. The reversal of 155121154 is 451121551.

155121154 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not an unprimeable number, because it can be changed into a prime (155121151) 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, 1686054 + ... + 1686145.

It is an arithmetic number, because the mean of its divisors is an integer number (30349800).

Almost surely, 2^155121154 is an apocalyptic number.

155121154 is a deficient number, since it is larger than the sum of its proper divisors (87677246).

155121154 is a wasteful number, since it uses less digits than its factorization.

155121154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3372224.

The product of its digits is 1000, while the sum is 25.

The square root of 155121154 is about 12454.7643092914. The cubic root of 155121154 is about 537.3084562853.

It can be divided in two parts, 15 and 5121154, that added together give a square (5121169 = 2263²).

The spelling of 155121154 in words is "one hundred fifty-five million, one hundred twenty-one thousand, one hundred fifty-four".