155494959 has 4 divisors (see below), whose sum is σ = 207326616. Its totient is φ = 103663304.

The previous prime is 155494949. The next prime is 155494967. The reversal of 155494959 is 959494551.

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 155494959 - 2⁴ = 155494943 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155494909) 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, 25915824 + ... + 25915829.

It is an arithmetic number, because the mean of its divisors is an integer number (51831654).

Almost surely, 2^155494959 is an apocalyptic number.

155494959 is a deficient number, since it is larger than the sum of its proper divisors (51831657).

155494959 is an equidigital number, since it uses as much as digits as its factorization.

155494959 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51831656.

The product of its digits is 1458000, while the sum is 51.

The square root of 155494959 is about 12469.7617860166. The cubic root of 155494959 is about 537.7397051631.

The spelling of 155494959 in words is "one hundred fifty-five million, four hundred ninety-four thousand, nine hundred fifty-nine".