145286857 has 8 divisors (see below), whose sum is σ = 146871296. Its totient is φ = 143709552.

The previous prime is 145286849. The next prime is 145286861. The reversal of 145286857 is 758682541.

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 145286857 - 2³ = 145286849 is a prime.

It is a super-2 number, since 2×145286857² = 42216541633876898, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145286807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45838 + ... + 48904.

It is an arithmetic number, because the mean of its divisors is an integer number (18358912).

Almost surely, 2^145286857 is an apocalyptic number.

It is an amenable number.

145286857 is a deficient number, since it is larger than the sum of its proper divisors (1584439).

145286857 is a wasteful number, since it uses less digits than its factorization.

145286857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3567.

The product of its digits is 537600, while the sum is 46.

The square root of 145286857 is about 12053.4997822209. The cubic root of 145286857 is about 525.7050023643.

The spelling of 145286857 in words is "one hundred forty-five million, two hundred eighty-six thousand, eight hundred fifty-seven".