155016623 has 4 divisors (see below), whose sum is σ = 156200088. Its totient is φ = 153833160.

The previous prime is 155016601. The next prime is 155016661. The reversal of 155016623 is 326610551.

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 155016623 - 2¹² = 155012527 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 (155016683) 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, 591536 + ... + 591797.

It is an arithmetic number, because the mean of its divisors is an integer number (39050022).

Almost surely, 2^155016623 is an apocalyptic number.

155016623 is a deficient number, since it is larger than the sum of its proper divisors (1183465).

155016623 is a wasteful number, since it uses less digits than its factorization.

155016623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1183464.

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 155016623 is about 12450.5671758358. The cubic root of 155016623 is about 537.1877377168.

The spelling of 155016623 in words is "one hundred fifty-five million, sixteen thousand, six hundred twenty-three".