7251478741 has 8 divisors (see below), whose sum is σ = 8268654744. Its totient is φ = 6299927040.

The previous prime is 7251478733. The next prime is 7251478753. The reversal of 7251478741 is 1478741527.

It can be written as a sum of positive squares in 4 ways, for example, as 1546848900 + 5704629841 = 39330^2 + 75529^2 .

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 7251478741 - 2³ = 7251478733 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7251478691 and 7251478700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7251472741) 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, 16405840 + ... + 16406281.

It is an arithmetic number, because the mean of its divisors is an integer number (1033581843).

Almost surely, 2^7251478741 is an apocalyptic number.

It is an amenable number.

7251478741 is a deficient number, since it is larger than the sum of its proper divisors (1017176003).

7251478741 is a wasteful number, since it uses less digits than its factorization.

7251478741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32812151.

The product of its digits is 439040, while the sum is 46.

The square root of 7251478741 is about 85155.6148530442. The cubic root of 7251478741 is about 1935.5698981271.

The spelling of 7251478741 in words is "seven billion, two hundred fifty-one million, four hundred seventy-eight thousand, seven hundred forty-one".