155242244 has 12 divisors (see below), whose sum is σ = 271838784. Its totient is φ = 77574024.

The previous prime is 155242237. The next prime is 155242259. The reversal of 155242244 is 442242551.

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, 3752 + ... + 18015.

It is an arithmetic number, because the mean of its divisors is an integer number (22653232).

Almost surely, 2^155242244 is an apocalyptic number.

It is an amenable number.

155242244 is a deficient number, since it is larger than the sum of its proper divisors (116596540).

155242244 is a wasteful number, since it uses less digits than its factorization.

155242244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23554 (or 23552 counting only the distinct ones).

The product of its digits is 12800, while the sum is 29.

The square root of 155242244 is about 12459.6245529310. The cubic root of 155242244 is about 537.4482303844.

Adding to 155242244 its reverse (442242551), we get a palindrome (597484795).

The spelling of 155242244 in words is "one hundred fifty-five million, two hundred forty-two thousand, two hundred forty-four".