155445131 has 8 divisors (see below), whose sum is σ = 158572944. Its totient is φ = 152324640.

The previous prime is 155445091. The next prime is 155445151. The reversal of 155445131 is 131544551.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-155445131 is a prime.

It is a super-2 number, since 2×155445131² = 48326377503214322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 155445094 and 155445103.

It is not an unprimeable number, because it can be changed into a prime (155445151) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64376 + ... + 66746.

It is an arithmetic number, because the mean of its divisors is an integer number (19821618).

Almost surely, 2^155445131 is an apocalyptic number.

155445131 is a deficient number, since it is larger than the sum of its proper divisors (3127813).

155445131 is a wasteful number, since it uses less digits than its factorization.

155445131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3661.

The product of its digits is 6000, while the sum is 29.

The square root of 155445131 is about 12467.7636727683. The cubic root of 155445131 is about 537.6822598782.

Adding to 155445131 its reverse (131544551), we get a palindrome (286989682).

The spelling of 155445131 in words is "one hundred fifty-five million, four hundred forty-five thousand, one hundred thirty-one".