155342643 has 16 divisors (see below), whose sum is σ = 215894016. Its totient is φ = 99241920.

The previous prime is 155342641. The next prime is 155342653. The reversal of 155342643 is 346243551.

It is not a de Polignac number, because 155342643 - 2¹ = 155342641 is a prime.

It is not an unprimeable number, because it can be changed into a prime (155342641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1471 + ... + 17687.

It is an arithmetic number, because the mean of its divisors is an integer number (13493376).

Almost surely, 2^155342643 is an apocalyptic number.

155342643 is a deficient number, since it is larger than the sum of its proper divisors (60551373).

155342643 is a wasteful number, since it uses less digits than its factorization.

155342643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16354.

The product of its digits is 43200, while the sum is 33.

The square root of 155342643 is about 12463.6528754615. The cubic root of 155342643 is about 537.5640657726.

The spelling of 155342643 in words is "one hundred fifty-five million, three hundred forty-two thousand, six hundred forty-three".