155015320 has 16 divisors (see below), whose sum is σ = 348784560. Its totient is φ = 62006112.

The previous prime is 155015303. The next prime is 155015327. The reversal of 155015320 is 23510551.

It is a junction number, because it is equal to n+sod(n) for n = 155015291 and 155015300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155015327) 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, 1937652 + ... + 1937731.

It is an arithmetic number, because the mean of its divisors is an integer number (21799035).

Almost surely, 2^155015320 is an apocalyptic number.

155015320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

155015320 is an abundant number, since it is smaller than the sum of its proper divisors (193769240).

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

155015320 is a wasteful number, since it uses less digits than its factorization.

155015320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3875394 (or 3875390 counting only the distinct ones).

The product of its (nonzero) digits is 750, while the sum is 22.

The square root of 155015320 is about 12450.5148487924. The cubic root of 155015320 is about 537.1862325931.

Adding to 155015320 its reverse (23510551), we get a palindrome (178525871).

The spelling of 155015320 in words is "one hundred fifty-five million, fifteen thousand, three hundred twenty".