7457245 has 4 divisors (see below), whose sum is σ = 8948700. Its totient is φ = 5965792.

The previous prime is 7457243. The next prime is 7457257. The reversal of 7457245 is 5427547.

7457245 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5427547 = 197 ⋅27551.

It can be written as a sum of positive squares in 2 ways, for example, as 2125764 + 5331481 = 1458^2 + 2309^2 .

It is a cyclic number.

It is not a de Polignac number, because 7457245 - 2¹ = 7457243 is a prime.

It is a super-2 number, since 2×7457245² = 111221005980050, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 7457245.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7457243) 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, 745720 + ... + 745729.

It is an arithmetic number, because the mean of its divisors is an integer number (2237175).

Almost surely, 2^7457245 is an apocalyptic number.

It is an amenable number.

7457245 is a deficient number, since it is larger than the sum of its proper divisors (1491455).

7457245 is a wasteful number, since it uses less digits than its factorization.

7457245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1491454.

The product of its digits is 39200, while the sum is 34.

The square root of 7457245 is about 2730.7956715946. The cubic root of 7457245 is about 195.3707170881.

The spelling of 7457245 in words is "seven million, four hundred fifty-seven thousand, two hundred forty-five".