7973145 has 24 divisors (see below), whose sum is σ = 13917696. Its totient is φ = 4222368.

The previous prime is 7973143. The next prime is 7973149. The reversal of 7973145 is 5413797.

It is a happy number.

It is not a de Polignac number, because 7973145 - 2¹ = 7973143 is a prime.

It is a nialpdrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (7973143) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6792 + ... + 7878.

It is an arithmetic number, because the mean of its divisors is an integer number (579904).

Almost surely, 2^7973145 is an apocalyptic number.

It is an amenable number.

7973145 is a deficient number, since it is larger than the sum of its proper divisors (5944551).

7973145 is a wasteful number, since it uses less digits than its factorization.

7973145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1261 (or 1258 counting only the distinct ones).

The product of its digits is 26460, while the sum is 36.

The square root of 7973145 is about 2823.6757958378. The cubic root of 7973145 is about 199.7759574517.

It can be divided in two parts, 7973 and 145, that added together give a palindrome (8118).

The spelling of 7973145 in words is "seven million, nine hundred seventy-three thousand, one hundred forty-five".