7155013 has 4 divisors (see below), whose sum is σ = 7169580. Its totient is φ = 7140448.

The previous prime is 7154999. The next prime is 7155019. The reversal of 7155013 is 3105517.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3105517 = 67 ⋅46351.

It can be written as a sum of positive squares in 2 ways, for example, as 2630884 + 4524129 = 1622^2 + 2127^2 .

It is a cyclic number.

It is not a de Polignac number, because 7155013 - 2⁵ = 7154981 is a prime.

It is a super-2 number, since 2×7155013² = 102388422060338, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7155019) 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, 6520 + ... + 7537.

It is an arithmetic number, because the mean of its divisors is an integer number (1792395).

Almost surely, 2^7155013 is an apocalyptic number.

It is an amenable number.

7155013 is a deficient number, since it is larger than the sum of its proper divisors (14567).

7155013 is a wasteful number, since it uses less digits than its factorization.

7155013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14566.

The product of its (nonzero) digits is 525, while the sum is 22.

The square root of 7155013 is about 2674.8856050306. The cubic root of 7155013 is about 192.6948653599.

The spelling of 7155013 in words is "seven million, one hundred fifty-five thousand, thirteen".