145306155 has 8 divisors (see below), whose sum is σ = 232489872. Its totient is φ = 77496608.

The previous prime is 145306151. The next prime is 145306163. The reversal of 145306155 is 551603541.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 145306155 - 2² = 145306151 is a prime.

It is a super-2 number, since 2×145306155² = 42227757361768050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (145306151) 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, 4843524 + ... + 4843553.

It is an arithmetic number, because the mean of its divisors is an integer number (29061234).

Almost surely, 2^145306155 is an apocalyptic number.

145306155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

145306155 is a deficient number, since it is larger than the sum of its proper divisors (87183717).

145306155 is an equidigital number, since it uses as much as digits as its factorization.

145306155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9687085.

The product of its (nonzero) digits is 9000, while the sum is 30.

The square root of 145306155 is about 12054.3002700281. The cubic root of 145306155 is about 525.7282772523.

Adding to 145306155 its reverse (551603541), we get a palindrome (696909696).

The spelling of 145306155 in words is "one hundred forty-five million, three hundred six thousand, one hundred fifty-five".