145252155 has 32 divisors (see below), whose sum is σ = 243855360. Its totient is φ = 73727360.

The previous prime is 145252139. The next prime is 145252187. The reversal of 145252155 is 551252541.

It is not a de Polignac number, because 145252155 - 2⁴ = 145252139 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28534 + ... + 33236.

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

Almost surely, 2^145252155 is an apocalyptic number.

145252155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

145252155 is a deficient number, since it is larger than the sum of its proper divisors (98603205).

145252155 is a wasteful number, since it uses less digits than its factorization.

145252155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4811.

The product of its digits is 10000, while the sum is 30.

The square root of 145252155 is about 12052.0601973273. The cubic root of 145252155 is about 525.6631438690.

The spelling of 145252155 in words is "one hundred forty-five million, two hundred fifty-two thousand, one hundred fifty-five".