7906521 has 8 divisors (see below), whose sum is σ = 12048064. Its totient is φ = 4518000.

The previous prime is 7906501. The next prime is 7906523. The reversal of 7906521 is 1256097.

7906521 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 7906521 - 2¹⁴ = 7890137 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7906523) 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, 188230 + ... + 188271.

It is an arithmetic number, because the mean of its divisors is an integer number (1506008).

Almost surely, 2^7906521 is an apocalyptic number.

It is an amenable number.

7906521 is a deficient number, since it is larger than the sum of its proper divisors (4141543).

7906521 is a wasteful number, since it uses less digits than its factorization.

7906521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 376511.

The product of its (nonzero) digits is 3780, while the sum is 30.

The square root of 7906521 is about 2811.8536590655. The cubic root of 7906521 is about 199.2179543421.

It can be divided in two parts, 790652 and 1, that added together give a triangular number (790653 = T₁₂₅₇).

The spelling of 7906521 in words is "seven million, nine hundred six thousand, five hundred twenty-one".