7156145 has 8 divisors (see below), whose sum is σ = 8638056. Its totient is φ = 5691136.

The previous prime is 7156111. The next prime is 7156183. The reversal of 7156145 is 5416517.

It can be written as a sum of positive squares in 4 ways, for example, as 2961841 + 4194304 = 1721^2 + 2048^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 7156145 - 2¹⁰ = 7155121 is a prime.

It is a super-2 number, since 2×7156145² = 102420822522050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3272 + ... + 5001.

It is an arithmetic number, because the mean of its divisors is an integer number (1079757).

Almost surely, 2^7156145 is an apocalyptic number.

It is an amenable number.

7156145 is a deficient number, since it is larger than the sum of its proper divisors (1481911).

7156145 is a wasteful number, since it uses less digits than its factorization.

7156145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8451.

The product of its digits is 4200, while the sum is 29.

The square root of 7156145 is about 2675.0971944959. The cubic root of 7156145 is about 192.7050269573.

The spelling of 7156145 in words is "seven million, one hundred fifty-six thousand, one hundred forty-five".