7156045 has 16 divisors (see below), whose sum is σ = 9359280. Its totient is φ = 5220864.

The previous prime is 7156043. The next prime is 7156049. The reversal of 7156045 is 5406517.

It can be written as a sum of positive squares in 8 ways, for example, as 617796 + 6538249 = 786^2 + 2557^2 .

It is a cyclic number.

It is not a de Polignac number, because 7156045 - 2¹ = 7156043 is a prime.

7156045 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7156043) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5167 + ... + 6403.

It is an arithmetic number, because the mean of its divisors is an integer number (584955).

Almost surely, 2^7156045 is an apocalyptic number.

It is an amenable number.

7156045 is a deficient number, since it is larger than the sum of its proper divisors (2203235).

7156045 is a wasteful number, since it uses less digits than its factorization.

7156045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1344.

The product of its (nonzero) digits is 4200, while the sum is 28.

The square root of 7156045 is about 2675.0785035210. The cubic root of 7156045 is about 192.7041293328.

The spelling of 7156045 in words is "seven million, one hundred fifty-six thousand, forty-five".