7473521 has 16 divisors (see below), whose sum is σ = 8503488. Its totient is φ = 6508800.

The previous prime is 7473509. The next prime is 7473541. The reversal of 7473521 is 1253747.

It is a cyclic number.

It is not a de Polignac number, because 7473521 - 2¹⁴ = 7457137 is a prime.

It is a super-2 number, since 2×7473521² = 111707032274882, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (7473541) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32810 + ... + 33036.

It is an arithmetic number, because the mean of its divisors is an integer number (531468).

Almost surely, 2^7473521 is an apocalyptic number.

It is an amenable number.

7473521 is a deficient number, since it is larger than the sum of its proper divisors (1029967).

7473521 is a wasteful number, since it uses less digits than its factorization.

7473521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 352.

The product of its digits is 5880, while the sum is 29.

The square root of 7473521 is about 2733.7741311235. The cubic root of 7473521 is about 195.5127509164.

The spelling of 7473521 in words is "seven million, four hundred seventy-three thousand, five hundred twenty-one".