155023743 has 32 divisors (see below), whose sum is σ = 241339392. Its totient is φ = 86688000.

The previous prime is 155023727. The next prime is 155023807. The reversal of 155023743 is 347320551.

It is not a de Polignac number, because 155023743 - 2⁴ = 155023727 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 155023743.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155023543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 257643 + ... + 258243.

It is an arithmetic number, because the mean of its divisors is an integer number (7541856).

Almost surely, 2^155023743 is an apocalyptic number.

155023743 is a deficient number, since it is larger than the sum of its proper divisors (86315649).

155023743 is a wasteful number, since it uses less digits than its factorization.

155023743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 855.

The product of its (nonzero) digits is 12600, while the sum is 30.

The square root of 155023743 is about 12450.8531033018. The cubic root of 155023743 is about 537.1959620351.

The spelling of 155023743 in words is "one hundred fifty-five million, twenty-three thousand, seven hundred forty-three".