7479525521 has 8 divisors (see below), whose sum is σ = 8191397760. Its totient is φ = 6787156752.

The previous prime is 7479525509. The next prime is 7479525539. The reversal of 7479525521 is 1255259747.

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 7479525521 - 2²² = 7475331217 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7479525551) 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, 4875065 + ... + 4876598.

It is an arithmetic number, because the mean of its divisors is an integer number (1023924720).

Almost surely, 2^7479525521 is an apocalyptic number.

It is an amenable number.

7479525521 is a deficient number, since it is larger than the sum of its proper divisors (711872239).

7479525521 is a wasteful number, since it uses less digits than its factorization.

7479525521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9751735.

The product of its digits is 882000, while the sum is 47.

The square root of 7479525521 is about 86484.2501326109. The cubic root of 7479525521 is about 1955.6509778020.

The spelling of 7479525521 in words is "seven billion, four hundred seventy-nine million, five hundred twenty-five thousand, five hundred twenty-one".