145396857 has 8 divisors (see below), whose sum is σ = 194181184. Its totient is φ = 96771888.

The previous prime is 145396847. The next prime is 145396859. The reversal of 145396857 is 758693541.

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

It is not a de Polignac number, because 145396857 - 2⁴ = 145396841 is a prime.

It is a super-2 number, since 2×145396857² = 42280492050956898, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145396859) 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, 37693 + ... + 41370.

It is an arithmetic number, because the mean of its divisors is an integer number (24272648).

Almost surely, 2^145396857 is an apocalyptic number.

It is an amenable number.

145396857 is a deficient number, since it is larger than the sum of its proper divisors (48784327).

145396857 is an equidigital number, since it uses as much as digits as its factorization.

145396857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79679.

The product of its digits is 907200, while the sum is 48.

The square root of 145396857 is about 12058.0619089471. The cubic root of 145396857 is about 525.8376433189.

The spelling of 145396857 in words is "one hundred forty-five million, three hundred ninety-six thousand, eight hundred fifty-seven".