7345552521 has 8 divisors (see below), whose sum is σ = 9794583424. Its totient is φ = 4896778320.

The previous prime is 7345552499. The next prime is 7345552523. The reversal of 7345552521 is 1252555437.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 7345552521 - 2¹¹ = 7345550473 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 7345552521.

It is not an unprimeable number, because it can be changed into a prime (7345552523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17415 + ... + 122451.

It is an arithmetic number, because the mean of its divisors is an integer number (1224322928).

Almost surely, 2^7345552521 is an apocalyptic number.

It is an amenable number.

7345552521 is a deficient number, since it is larger than the sum of its proper divisors (2449030903).

7345552521 is a wasteful number, since it uses less digits than its factorization.

7345552521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128351.

The product of its digits is 210000, while the sum is 39.

The square root of 7345552521 is about 85706.1988481580. The cubic root of 7345552521 is about 1943.9040418498.

The spelling of 7345552521 in words is "seven billion, three hundred forty-five million, five hundred fifty-two thousand, five hundred twenty-one".