155525623 has 4 divisors (see below), whose sum is σ = 169664328. Its totient is φ = 141386920.

The previous prime is 155525611. The next prime is 155525627. The reversal of 155525623 is 326525551.

155525623 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 155525623 - 2¹³ = 155517431 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155525627) 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, 7069336 + ... + 7069357.

It is an arithmetic number, because the mean of its divisors is an integer number (42416082).

Almost surely, 2^155525623 is an apocalyptic number.

155525623 is a deficient number, since it is larger than the sum of its proper divisors (14138705).

155525623 is a wasteful number, since it uses less digits than its factorization.

155525623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14138704.

The product of its digits is 45000, while the sum is 34.

The square root of 155525623 is about 12470.9912597195. The cubic root of 155525623 is about 537.7750507173.

The spelling of 155525623 in words is "one hundred fifty-five million, five hundred twenty-five thousand, six hundred twenty-three".