155040226 has 8 divisors (see below), whose sum is σ = 253702224. Its totient is φ = 70472820.

The previous prime is 155040191. The next prime is 155040227. The reversal of 155040226 is 622040551.

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

It is a self number, because there is not a number n which added to its sum of digits gives 155040226.

It is not an unprimeable number, because it can be changed into a prime (155040227) 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, 3523620 + ... + 3523663.

It is an arithmetic number, because the mean of its divisors is an integer number (31712778).

Almost surely, 2^155040226 is an apocalyptic number.

155040226 is a deficient number, since it is larger than the sum of its proper divisors (98661998).

155040226 is a wasteful number, since it uses less digits than its factorization.

155040226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7047296.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 155040226 is about 12451.5150082229. The cubic root of 155040226 is about 537.2150005967.

Adding to 155040226 its reverse (622040551), we get a palindrome (777080777).

The spelling of 155040226 in words is "one hundred fifty-five million, forty thousand, two hundred twenty-six".