155345420 has 24 divisors (see below), whose sum is σ = 326463648. Its totient is φ = 62092800.

The previous prime is 155345413. The next prime is 155345429. The reversal of 155345420 is 24543551.

155345420 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (29) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (155345429) 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, 44540 + ... + 47900.

It is an arithmetic number, because the mean of its divisors is an integer number (13602652).

Almost surely, 2^155345420 is an apocalyptic number.

155345420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

155345420 is an abundant number, since it is smaller than the sum of its proper divisors (171118228).

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

155345420 is a wasteful number, since it uses less digits than its factorization.

155345420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5681 (or 5679 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 29.

The square root of 155345420 is about 12463.7642789007. The cubic root of 155345420 is about 537.5672690281.

Adding to 155345420 its reverse (24543551), we get a palindrome (179888971).

It can be divided in two parts, 15 and 5345420, that added together give a palindrome (5345435).

The spelling of 155345420 in words is "one hundred fifty-five million, three hundred forty-five thousand, four hundred twenty".