155801436 has 24 divisors (see below), whose sum is σ = 415470720. Its totient is φ = 44514672.

The previous prime is 155801411. The next prime is 155801449. The reversal of 155801436 is 634108551.

155801436 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 155801397 and 155801406.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 927306 + ... + 927473.

It is an arithmetic number, because the mean of its divisors is an integer number (17311280).

Almost surely, 2^155801436 is an apocalyptic number.

It is an amenable number.

155801436 is an abundant number, since it is smaller than the sum of its proper divisors (259669284).

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

155801436 is a wasteful number, since it uses less digits than its factorization.

155801436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1854793 (or 1854791 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 33.

The square root of 155801436 is about 12482.0445440641. The cubic root of 155801436 is about 538.0927641851.

Adding to 155801436 its reverse (634108551), we get a palindrome (789909987).

The spelling of 155801436 in words is "one hundred fifty-five million, eight hundred one thousand, four hundred thirty-six".