7479521 has 8 divisors (see below), whose sum is σ = 8998080. Its totient is φ = 6073488.

The previous prime is 7479517. The next prime is 7479539. The reversal of 7479521 is 1259747.

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 7479521 - 2² = 7479517 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7479421) 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, 27986 + ... + 28251.

It is an arithmetic number, because the mean of its divisors is an integer number (1124760).

Almost surely, 2^7479521 is an apocalyptic number.

It is an amenable number.

7479521 is a deficient number, since it is larger than the sum of its proper divisors (1518559).

7479521 is a wasteful number, since it uses less digits than its factorization.

7479521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56263.

The product of its digits is 17640, while the sum is 35.

The square root of 7479521 is about 2734.8712949607. The cubic root of 7479521 is about 195.5650583771.

It can be divided in two parts, 7479 and 521, that added together give a cube (8000 = 20³).

The spelling of 7479521 in words is "seven million, four hundred seventy-nine thousand, five hundred twenty-one".