155207130 has 64 divisors (see below), whose sum is σ = 415013760. Its totient is φ = 36884736.

The previous prime is 155207089. The next prime is 155207131. The reversal of 155207130 is 31702551.

It is a self number, because there is not a number n which added to its sum of digits gives 155207130.

It is not an unprimeable number, because it can be changed into a prime (155207131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4449 + ... + 18171.

It is an arithmetic number, because the mean of its divisors is an integer number (6484590).

Almost surely, 2^155207130 is an apocalyptic number.

155207130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 155207130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (207506880).

155207130 is an abundant number, since it is smaller than the sum of its proper divisors (259806630).

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

155207130 is a wasteful number, since it uses less digits than its factorization.

155207130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13775.

The product of its (nonzero) digits is 1050, while the sum is 24.

The square root of 155207130 is about 12458.2153617603. The cubic root of 155207130 is about 537.4077058044.

Adding to 155207130 its reverse (31702551), we get a palindrome (186909681).

The spelling of 155207130 in words is "one hundred fifty-five million, two hundred seven thousand, one hundred thirty".