155562226 has 4 divisors (see below), whose sum is σ = 233343342. Its totient is φ = 77781112.

The previous prime is 155562203. The next prime is 155562227. The reversal of 155562226 is 622265551.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 119574225 + 35988001 = 10935^2 + 5999^2 .

It is a junction number, because it is equal to n+sod(n) for n = 155562191 and 155562200.

It is not an unprimeable number, because it can be changed into a prime (155562227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38890555 + ... + 38890558.

Almost surely, 2^155562226 is an apocalyptic number.

155562226 is a deficient number, since it is larger than the sum of its proper divisors (77781116).

155562226 is an equidigital number, since it uses as much as digits as its factorization.

155562226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77781115.

The product of its digits is 36000, while the sum is 34.

The square root of 155562226 is about 12472.4586990697. The cubic root of 155562226 is about 537.8172359122.

The spelling of 155562226 in words is "one hundred fifty-five million, five hundred sixty-two thousand, two hundred twenty-six".