155011144 has 8 divisors (see below), whose sum is σ = 290645910. Its totient is φ = 77505568.

The previous prime is 155011127. The next prime is 155011163. The reversal of 155011144 is 441110551.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 105308644 + 49702500 = 10262^2 + 7050^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9688189 + ... + 9688204.

Almost surely, 2^155011144 is an apocalyptic number.

It is an amenable number.

155011144 is a deficient number, since it is larger than the sum of its proper divisors (135634766).

155011144 is a wasteful number, since it uses less digits than its factorization.

155011144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19376399 (or 19376395 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 22.

The square root of 155011144 is about 12450.3471437547. The cubic root of 155011144 is about 537.1814087476.

Adding to 155011144 its reverse (441110551), we get a palindrome (596121695).

The spelling of 155011144 in words is "one hundred fifty-five million, eleven thousand, one hundred forty-four".