155243473 has 32 divisors (see below), whose sum is σ = 206219520. Its totient is φ = 113141760.

The previous prime is 155243423. The next prime is 155243483. The reversal of 155243473 is 374342551.

It is a cyclic number.

It is not a de Polignac number, because 155243473 - 2⁹ = 155242961 is a prime.

It is not an unprimeable number, because it can be changed into a prime (155243423) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 304743 + ... + 305251.

It is an arithmetic number, because the mean of its divisors is an integer number (6444360).

Almost surely, 2^155243473 is an apocalyptic number.

It is an amenable number.

155243473 is a deficient number, since it is larger than the sum of its proper divisors (50976047).

155243473 is a wasteful number, since it uses less digits than its factorization.

155243473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 777.

The product of its digits is 50400, while the sum is 34.

The square root of 155243473 is about 12459.6738721365. The cubic root of 155243473 is about 537.4496486456.

The spelling of 155243473 in words is "one hundred fifty-five million, two hundred forty-three thousand, four hundred seventy-three".