7551641 has 4 divisors (see below), whose sum is σ = 7568484. Its totient is φ = 7534800.

The previous prime is 7551581. The next prime is 7551647. The reversal of 7551641 is 1461557.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1461557 = 31 ⋅47147.

It can be written as a sum of positive squares in 2 ways, for example, as 687241 + 6864400 = 829^2 + 2620^2 .

It is a cyclic number.

It is not a de Polignac number, because 7551641 - 2¹⁰ = 7550617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7551647) 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, 7730 + ... + 8651.

It is an arithmetic number, because the mean of its divisors is an integer number (1892121).

Almost surely, 2^7551641 is an apocalyptic number.

It is an amenable number.

7551641 is a deficient number, since it is larger than the sum of its proper divisors (16843).

7551641 is a wasteful number, since it uses less digits than its factorization.

7551641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16842.

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

The square root of 7551641 is about 2748.0249271067. The cubic root of 7551641 is about 196.1916163705.

It can be divided in two parts, 75516 and 41, that added together give a palindrome (75557).

The spelling of 7551641 in words is "seven million, five hundred fifty-one thousand, six hundred forty-one".