8157345 has 16 divisors (see below), whose sum is σ = 14916480. Its totient is φ = 3729024.

The previous prime is 8157343. The next prime is 8157379. The reversal of 8157345 is 5437518.

8157345 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 8157345 - 2¹ = 8157343 is a prime.

It is an Ulam number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (8157343) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38740 + ... + 38949.

It is an arithmetic number, because the mean of its divisors is an integer number (932280).

Almost surely, 2^8157345 is an apocalyptic number.

It is an amenable number.

8157345 is a deficient number, since it is larger than the sum of its proper divisors (6759135).

8157345 is a wasteful number, since it uses less digits than its factorization.

8157345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77704.

The product of its digits is 16800, while the sum is 33.

The square root of 8157345 is about 2856.1066156571. The cubic root of 8157345 is about 201.3027047126.

It can be divided in two parts, 81573 and 45, that added together give a palindrome (81618).

The spelling of 8157345 in words is "eight million, one hundred fifty-seven thousand, three hundred forty-five".