7497145 has 4 divisors (see below), whose sum is σ = 8996580. Its totient is φ = 5997712.

The previous prime is 7497143. The next prime is 7497157. The reversal of 7497145 is 5417947.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2421136 + 5076009 = 1556^2 + 2253^2 .

It is a cyclic number.

It is not a de Polignac number, because 7497145 - 2¹ = 7497143 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7497143) 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 3 ways as a sum of consecutive naturals, for example, 749710 + ... + 749719.

It is an arithmetic number, because the mean of its divisors is an integer number (2249145).

Almost surely, 2^7497145 is an apocalyptic number.

It is an amenable number.

7497145 is a deficient number, since it is larger than the sum of its proper divisors (1499435).

7497145 is a wasteful number, since it uses less digits than its factorization.

7497145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1499434.

The product of its digits is 35280, while the sum is 37.

The square root of 7497145 is about 2738.0914886103. The cubic root of 7497145 is about 195.7185412459.

The spelling of 7497145 in words is "seven million, four hundred ninety-seven thousand, one hundred forty-five".