155382157 has 8 divisors (see below), whose sum is σ = 177724800. Its totient is φ = 133075824.

The previous prime is 155382127. The next prime is 155382173. The reversal of 155382157 is 751283551.

It is a happy number.

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

It is not a de Polignac number, because 155382157 - 2¹¹ = 155380109 is a prime.

It is a super-2 number, since 2×155382157² = 48287229427945298, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155382127) 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 7 ways as a sum of consecutive naturals, for example, 819 + ... + 17647.

It is an arithmetic number, because the mean of its divisors is an integer number (22215600).

Almost surely, 2^155382157 is an apocalyptic number.

It is an amenable number.

155382157 is a deficient number, since it is larger than the sum of its proper divisors (22342643).

155382157 is a wasteful number, since it uses less digits than its factorization.

155382157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18155.

The product of its digits is 42000, while the sum is 37.

The square root of 155382157 is about 12465.2379439784. The cubic root of 155382157 is about 537.6096413796.

The spelling of 155382157 in words is "one hundred fifty-five million, three hundred eighty-two thousand, one hundred fifty-seven".