150778155 has 32 divisors (see below), whose sum is σ = 264188160. Its totient is φ = 72823680.

The previous prime is 150778139. The next prime is 150778189. The reversal of 150778155 is 551877051.

It is a happy number.

It is not a de Polignac number, because 150778155 - 2⁴ = 150778139 is a prime.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 45081 + ... + 48309.

It is an arithmetic number, because the mean of its divisors is an integer number (8255880).

Almost surely, 2^150778155 is an apocalyptic number.

150778155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

150778155 is a deficient number, since it is larger than the sum of its proper divisors (113410005).

150778155 is a wasteful number, since it uses less digits than its factorization.

150778155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3531.

The product of its (nonzero) digits is 49000, while the sum is 39.

The square root of 150778155 is about 12279.1756645143. The cubic root of 150778155 is about 532.2464926582.

It can be divided in two parts, 15077 and 8155, that added together give a palindrome (23232).

The spelling of 150778155 in words is "one hundred fifty million, seven hundred seventy-eight thousand, one hundred fifty-five".