155205226 has 8 divisors (see below), whose sum is σ = 253972224. Its totient is φ = 70547820.

The previous prime is 155205221. The next prime is 155205277. The reversal of 155205226 is 622502551.

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

It is a super-2 number, since 2×155205226² = 48177324355422152, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 155205194 and 155205203.

It is not an unprimeable number, because it can be changed into a prime (155205221) 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, 3527370 + ... + 3527413.

It is an arithmetic number, because the mean of its divisors is an integer number (31746528).

Almost surely, 2^155205226 is an apocalyptic number.

155205226 is a deficient number, since it is larger than the sum of its proper divisors (98766998).

155205226 is a wasteful number, since it uses less digits than its factorization.

155205226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7054796.

The product of its (nonzero) digits is 6000, while the sum is 28.

The square root of 155205226 is about 12458.1389460866. The cubic root of 155205226 is about 537.4055082497.

Adding to 155205226 its reverse (622502551), we get a palindrome (777707777).

The spelling of 155205226 in words is "one hundred fifty-five million, two hundred five thousand, two hundred twenty-six".