155226646 has 8 divisors (see below), whose sum is σ = 238254984. Its totient is φ = 75808320.

The previous prime is 155226623. The next prime is 155226691. The reversal of 155226646 is 646622551.

155226646 is digitally balanced in base 3, 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 a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 902395 + ... + 902566.

It is an arithmetic number, because the mean of its divisors is an integer number (29781873).

Almost surely, 2^155226646 is an apocalyptic number.

155226646 is a deficient number, since it is larger than the sum of its proper divisors (83028338).

155226646 is a wasteful number, since it uses less digits than its factorization.

155226646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1805006.

The product of its digits is 86400, while the sum is 37.

The square root of 155226646 is about 12458.9985953928. The cubic root of 155226646 is about 537.4302297035.

It can be divided in two parts, 155 and 226646, that added together give a triangular number (226801 = T₆₇₃).

The spelling of 155226646 in words is "one hundred fifty-five million, two hundred twenty-six thousand, six hundred forty-six".