155670423 has 4 divisors (see below), whose sum is σ = 207560568. Its totient is φ = 103780280.

The previous prime is 155670407. The next prime is 155670443. The reversal of 155670423 is 324076551.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 155670423 - 2⁴ = 155670407 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155670443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25945068 + ... + 25945073.

It is an arithmetic number, because the mean of its divisors is an integer number (51890142).

Almost surely, 2^155670423 is an apocalyptic number.

155670423 is a deficient number, since it is larger than the sum of its proper divisors (51890145).

155670423 is an equidigital number, since it uses as much as digits as its factorization.

155670423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51890144.

The product of its (nonzero) digits is 25200, while the sum is 33.

The square root of 155670423 is about 12476.7953818278. The cubic root of 155670423 is about 537.9418949791.

The spelling of 155670423 in words is "one hundred fifty-five million, six hundred seventy thousand, four hundred twenty-three".