7145513 has 8 divisors (see below), whose sum is σ = 7533000. Its totient is φ = 6767488.

The previous prime is 7145507. The next prime is 7145527. The reversal of 7145513 is 3155417.

It can be written as a sum of positive squares in 4 ways, for example, as 3952144 + 3193369 = 1988^2 + 1787^2 .

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 7145513 - 2¹² = 7141417 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7145503) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 788 + ... + 3861.

It is an arithmetic number, because the mean of its divisors is an integer number (941625).

Almost surely, 2^7145513 is an apocalyptic number.

It is an amenable number.

7145513 is a deficient number, since it is larger than the sum of its proper divisors (387487).

7145513 is a wasteful number, since it uses less digits than its factorization.

7145513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4731.

The product of its digits is 2100, while the sum is 26.

The square root of 7145513 is about 2673.1092383215. The cubic root of 7145513 is about 192.6095446667.

The spelling of 7145513 in words is "seven million, one hundred forty-five thousand, five hundred thirteen".