7346540521 has 4 divisors (see below), whose sum is σ = 7348696452. Its totient is φ = 7344384592.

The previous prime is 7346540501. The next prime is 7346540629. The reversal of 7346540521 is 1250456437.

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

It can be written as a sum of positive squares in 2 ways, for example, as 6635731600 + 710808921 = 81460^2 + 26661^2 .

It is a cyclic number.

It is not a de Polignac number, because 7346540521 - 2¹⁹ = 7346016233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7346540501) 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, 1072846 + ... + 1079671.

It is an arithmetic number, because the mean of its divisors is an integer number (1837174113).

Almost surely, 2^7346540521 is an apocalyptic number.

It is an amenable number.

7346540521 is a deficient number, since it is larger than the sum of its proper divisors (2155931).

7346540521 is a wasteful number, since it uses less digits than its factorization.

7346540521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2155930.

The product of its (nonzero) digits is 100800, while the sum is 37.

The square root of 7346540521 is about 85711.9625314927. The cubic root of 7346540521 is about 1943.9911916857.

Adding to 7346540521 its reverse (1250456437), we get a palindrome (8596996958).

The spelling of 7346540521 in words is "seven billion, three hundred forty-six million, five hundred forty thousand, five hundred twenty-one".