7253145 has 20 divisors (see below), whose sum is σ = 13002660. Its totient is φ = 3868128.

The previous prime is 7253137. The next prime is 7253167. The reversal of 7253145 is 5413527.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 2893401 + 4359744 = 1701^2 + 2088^2 .

It is not a de Polignac number, because 7253145 - 2³ = 7253137 is a prime.

It is a super-2 number, since 2×7253145² = 105216224782050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a zygodrome in base 3.

It is a congruent number.

It is an unprimeable number.

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 19 ways as a sum of consecutive naturals, for example, 8550 + ... + 9359.

It is an arithmetic number, because the mean of its divisors is an integer number (650133).

Almost surely, 2^7253145 is an apocalyptic number.

It is an amenable number.

7253145 is a deficient number, since it is larger than the sum of its proper divisors (5749515).

7253145 is a wasteful number, since it uses less digits than its factorization.

7253145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17926 (or 17917 counting only the distinct ones).

The product of its digits is 4200, while the sum is 27.

The square root of 7253145 is about 2693.1663520845. The cubic root of 7253145 is about 193.5718139788.

The spelling of 7253145 in words is "seven million, two hundred fifty-three thousand, one hundred forty-five".