8157953 has 4 divisors (see below), whose sum is σ = 8178900. Its totient is φ = 8137008.

The previous prime is 8157949. The next prime is 8157959. The reversal of 8157953 is 3597518.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3597518 = 2 ⋅1798759.

It can be written as a sum of positive squares in 2 ways, for example, as 7059649 + 1098304 = 2657^2 + 1048^2 .

It is a cyclic number.

It is not a de Polignac number, because 8157953 - 2² = 8157949 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8157959) 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, 9878 + ... + 10671.

It is an arithmetic number, because the mean of its divisors is an integer number (2044725).

Almost surely, 2^8157953 is an apocalyptic number.

It is an amenable number.

8157953 is a deficient number, since it is larger than the sum of its proper divisors (20947).

8157953 is a wasteful number, since it uses less digits than its factorization.

8157953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20946.

The product of its digits is 37800, while the sum is 38.

The square root of 8157953 is about 2856.2130522774. The cubic root of 8157953 is about 201.3077058907.

The spelling of 8157953 in words is "eight million, one hundred fifty-seven thousand, nine hundred fifty-three".