7113551 has 4 divisors (see below), whose sum is σ = 7136592. Its totient is φ = 7090512.

The previous prime is 7113527. The next prime is 7113553. The reversal of 7113551 is 1553117.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 7113551 - 2¹⁸ = 6851407 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 (7113553) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 11051 + ... + 11676.

It is an arithmetic number, because the mean of its divisors is an integer number (1784148).

Almost surely, 2^7113551 is an apocalyptic number.

7113551 is a deficient number, since it is larger than the sum of its proper divisors (23041).

7113551 is a wasteful number, since it uses less digits than its factorization.

7113551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23040.

The product of its digits is 525, while the sum is 23.

The square root of 7113551 is about 2667.1241065987. The cubic root of 7113551 is about 192.3219334971.

Adding to 7113551 its reverse (1553117), we get a palindrome (8666668).

The spelling of 7113551 in words is "seven million, one hundred thirteen thousand, five hundred fifty-one".