155450423 has 4 divisors (see below), whose sum is σ = 156480048. Its totient is φ = 154420800.

The previous prime is 155450389. The next prime is 155450429. The reversal of 155450423 is 324054551.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 324054551 = 2011 ⋅161141.

It is a cyclic number.

It is not a de Polignac number, because 155450423 - 2⁸ = 155450167 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 (155450429) 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, 514586 + ... + 514887.

It is an arithmetic number, because the mean of its divisors is an integer number (39120012).

Almost surely, 2^155450423 is an apocalyptic number.

155450423 is a deficient number, since it is larger than the sum of its proper divisors (1029625).

155450423 is a wasteful number, since it uses less digits than its factorization.

155450423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1029624.

The product of its (nonzero) digits is 12000, while the sum is 29.

The square root of 155450423 is about 12467.9758982764. The cubic root of 155450423 is about 537.6883614572.

The spelling of 155450423 in words is "one hundred fifty-five million, four hundred fifty thousand, four hundred twenty-three".