145897853 has 4 divisors (see below), whose sum is σ = 146124000. Its totient is φ = 145671708.

The previous prime is 145897819. The next prime is 145897867. The reversal of 145897853 is 358798541.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 358798541 = 739 ⋅485519.

It is a cyclic number.

It is not a de Polignac number, because 145897853 - 2¹² = 145893757 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145897153) 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, 112103 + ... + 113396.

It is an arithmetic number, because the mean of its divisors is an integer number (36531000).

Almost surely, 2^145897853 is an apocalyptic number.

It is an amenable number.

145897853 is a deficient number, since it is larger than the sum of its proper divisors (226147).

145897853 is an equidigital number, since it uses as much as digits as its factorization.

145897853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226146.

The product of its digits is 1209600, while the sum is 50.

The square root of 145897853 is about 12078.8183610815. The cubic root of 145897853 is about 526.4409130106.

The spelling of 145897853 in words is "one hundred forty-five million, eight hundred ninety-seven thousand, eight hundred fifty-three".