155087238 has 16 divisors (see below), whose sum is σ = 310395456. Its totient is φ = 51658920.

The previous prime is 155087237. The next prime is 155087249. The reversal of 155087238 is 832780551.

155087238 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 155087196 and 155087205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155087237) 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, 745 + ... + 17627.

It is an arithmetic number, because the mean of its divisors is an integer number (19399716).

Almost surely, 2^155087238 is an apocalyptic number.

155087238 is an abundant number, since it is smaller than the sum of its proper divisors (155308218).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

155087238 is a wasteful number, since it uses less digits than its factorization.

155087238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18419.

The product of its (nonzero) digits is 67200, while the sum is 39.

The square root of 155087238 is about 12453.4026675443. The cubic root of 155087238 is about 537.2692940317.

It can be divided in two parts, 1550 and 87238, that added together give a palindrome (88788).

The spelling of 155087238 in words is "one hundred fifty-five million, eighty-seven thousand, two hundred thirty-eight".