145509854 has 8 divisors (see below), whose sum is σ = 249445488. Its totient is φ = 62361360.

The previous prime is 145509853. The next prime is 145509883. The reversal of 145509854 is 458905541.

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

It is a super-2 number, since 2×145509854² = 42346235222202632, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145509853) 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, 5196767 + ... + 5196794.

It is an arithmetic number, because the mean of its divisors is an integer number (31180686).

Almost surely, 2^145509854 is an apocalyptic number.

145509854 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

145509854 is a deficient number, since it is larger than the sum of its proper divisors (103935634).

145509854 is a wasteful number, since it uses less digits than its factorization.

145509854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10393570.

The product of its (nonzero) digits is 144000, while the sum is 41.

The square root of 145509854 is about 12062.7465363407. The cubic root of 145509854 is about 525.9738284964.

The spelling of 145509854 in words is "one hundred forty-five million, five hundred nine thousand, eight hundred fifty-four".