155801130 has 32 divisors (see below), whose sum is σ = 379508544. Its totient is φ = 40926336.

The previous prime is 155801119. The next prime is 155801131. The reversal of 155801130 is 31108551.

It is a self number, because there is not a number n which added to its sum of digits gives 155801130.

It is not an unprimeable number, because it can be changed into a prime (155801131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36747 + ... + 40766.

It is an arithmetic number, because the mean of its divisors is an integer number (11859642).

Almost surely, 2^155801130 is an apocalyptic number.

155801130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

155801130 is an abundant number, since it is smaller than the sum of its proper divisors (223707414).

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

155801130 is a wasteful number, since it uses less digits than its factorization.

155801130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77590.

The product of its (nonzero) digits is 600, while the sum is 24.

The square root of 155801130 is about 12482.0322864508. The cubic root of 155801130 is about 538.0924119066.

Adding to 155801130 its reverse (31108551), we get a palindrome (186909681).

The spelling of 155801130 in words is "one hundred fifty-five million, eight hundred one thousand, one hundred thirty".