155487923 has 4 divisors (see below), whose sum is σ = 155521608. Its totient is φ = 155454240.

The previous prime is 155487919. The next prime is 155487929. The reversal of 155487923 is 329784551.

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 155487923 - 2² = 155487919 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (155487929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8561 + ... + 19602.

It is an arithmetic number, because the mean of its divisors is an integer number (38880402).

Almost surely, 2^155487923 is an apocalyptic number.

155487923 is a deficient number, since it is larger than the sum of its proper divisors (33685).

155487923 is an equidigital number, since it uses as much as digits as its factorization.

155487923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33684.

The product of its digits is 302400, while the sum is 44.

The square root of 155487923 is about 12469.4796603547. The cubic root of 155487923 is about 537.7315943028.

The spelling of 155487923 in words is "one hundred fifty-five million, four hundred eighty-seven thousand, nine hundred twenty-three".