155247144 has 32 divisors (see below), whose sum is σ = 417973920. Its totient is φ = 47768256.

The previous prime is 155247097. The next prime is 155247149. The reversal of 155247144 is 441742551.

It is not an unprimeable number, because it can be changed into a prime (155247149) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 248482 + ... + 249105.

It is an arithmetic number, because the mean of its divisors is an integer number (13061685).

Almost surely, 2^155247144 is an apocalyptic number.

It is an amenable number.

155247144 is an abundant number, since it is smaller than the sum of its proper divisors (262726776).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

155247144 is a wasteful number, since it uses less digits than its factorization.

155247144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 497609 (or 497605 counting only the distinct ones).

The product of its digits is 22400, while the sum is 33.

The square root of 155247144 is about 12459.8211865179. The cubic root of 155247144 is about 537.4538849205.

Adding to 155247144 its reverse (441742551), we get a palindrome (596989695).

The spelling of 155247144 in words is "one hundred fifty-five million, two hundred forty-seven thousand, one hundred forty-four".