155198043 has 144 divisors (see below), whose sum is σ = 322672896. Its totient is φ = 70519680.

The previous prime is 155198041. The next prime is 155198047. The reversal of 155198043 is 340891551.

It is not a de Polignac number, because 155198043 - 2¹ = 155198041 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 155197989 and 155198007.

It is not an unprimeable number, because it can be changed into a prime (155198041) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 1450396 + ... + 1450502.

It is an arithmetic number, because the mean of its divisors is an integer number (2240784).

Almost surely, 2^155198043 is an apocalyptic number.

155198043 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

155198043 is an abundant number, since it is smaller than the sum of its proper divisors (167474853).

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

155198043 is a wasteful number, since it uses less digits than its factorization.

155198043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174 (or 164 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 36.

The square root of 155198043 is about 12457.8506573165. The cubic root of 155198043 is about 537.3972176283.

The spelling of 155198043 in words is "one hundred fifty-five million, one hundred ninety-eight thousand, forty-three".