145151505 has 48 divisors (see below), whose sum is σ = 267096960. Its totient is φ = 72762624.

The previous prime is 145151497. The next prime is 145151509. The reversal of 145151505 is 505151541.

145151505 is a `hidden beast` number, since 1 + 4 + 5 + 151 + 505 = 666.

It is not a de Polignac number, because 145151505 - 2³ = 145151497 is a prime.

It is not an unprimeable number, because it can be changed into a prime (145151509) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 59877 + ... + 62253.

It is an arithmetic number, because the mean of its divisors is an integer number (5564520).

Almost surely, 2^145151505 is an apocalyptic number.

145151505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

145151505 is a deficient number, since it is larger than the sum of its proper divisors (121945455).

145151505 is a wasteful number, since it uses less digits than its factorization.

145151505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2470 (or 2467 counting only the distinct ones).

The product of its (nonzero) digits is 2500, while the sum is 27.

The square root of 145151505 is about 12047.8838390815. The cubic root of 145151505 is about 525.5416993812.

The spelling of 145151505 in words is "one hundred forty-five million, one hundred fifty-one thousand, five hundred five".