155130261 has 32 divisors (see below), whose sum is σ = 243855360. Its totient is φ = 86481600.

The previous prime is 155130229. The next prime is 155130263. The reversal of 155130261 is 162031551.

It is not a de Polignac number, because 155130261 - 2⁵ = 155130229 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155130263) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 184480 + ... + 185318.

It is an arithmetic number, because the mean of its divisors is an integer number (7620480).

Almost surely, 2^155130261 is an apocalyptic number.

155130261 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

155130261 is a deficient number, since it is larger than the sum of its proper divisors (88725099).

155130261 is a wasteful number, since it uses less digits than its factorization.

155130261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1297.

The product of its (nonzero) digits is 900, while the sum is 24.

The square root of 155130261 is about 12455.1299069901. The cubic root of 155130261 is about 537.3189710179.

The spelling of 155130261 in words is "one hundred fifty-five million, one hundred thirty thousand, two hundred sixty-one".