145451506 has 8 divisors (see below), whose sum is σ = 221433840. Its totient is φ = 71640228.

The previous prime is 145451503. The next prime is 145451513. The reversal of 145451506 is 605154541.

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

It is a super-2 number, since 2×145451506² = 42312281195336072, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (145451503) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 542596 + ... + 542863.

It is an arithmetic number, because the mean of its divisors is an integer number (27679230).

Almost surely, 2^145451506 is an apocalyptic number.

145451506 is a deficient number, since it is larger than the sum of its proper divisors (75982334).

145451506 is a wasteful number, since it uses less digits than its factorization.

145451506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1085528.

The product of its (nonzero) digits is 12000, while the sum is 31.

The square root of 145451506 is about 12060.3277733236. The cubic root of 145451506 is about 525.9035156777.

The spelling of 145451506 in words is "one hundred forty-five million, four hundred fifty-one thousand, five hundred six".