155243445052 has 24 divisors (see below), whose sum is σ = 288564447024. Its totient is φ = 72825268992.

The previous prime is 155243445041. The next prime is 155243445059. The reversal of 155243445052 is 250544342551.

It is a super-2 number, since 2×155243445052² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 155243444996 and 155243445014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155243445059) 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, 3579378 + ... + 3622489.

It is an arithmetic number, because the mean of its divisors is an integer number (12023518626).

Almost surely, 2^155243445052 is an apocalyptic number.

It is an amenable number.

155243445052 is a deficient number, since it is larger than the sum of its proper divisors (133321001972).

155243445052 is a wasteful number, since it uses less digits than its factorization.

155243445052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7202205 (or 7202203 counting only the distinct ones).

The product of its (nonzero) digits is 480000, while the sum is 40.

The spelling of 155243445052 in words is "one hundred fifty-five billion, two hundred forty-three million, four hundred forty-five thousand, fifty-two".