7854854521 has 4 divisors (see below), whose sum is σ = 7884721152. Its totient is φ = 7824987892.

The previous prime is 7854854503. The next prime is 7854854533. The reversal of 7854854521 is 1254584587.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 7854854521 - 2¹⁷ = 7854723449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7854854621) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14932921 + ... + 14933446.

It is an arithmetic number, because the mean of its divisors is an integer number (1971180288).

Almost surely, 2^7854854521 is an apocalyptic number.

It is an amenable number.

7854854521 is a deficient number, since it is larger than the sum of its proper divisors (29866631).

7854854521 is a wasteful number, since it uses less digits than its factorization.

7854854521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29866630.

The product of its digits is 1792000, while the sum is 49.

The square root of 7854854521 is about 88627.6171461244. The cubic root of 7854854521 is about 1987.8306470239.

The spelling of 7854854521 in words is "seven billion, eight hundred fifty-four million, eight hundred fifty-four thousand, five hundred twenty-one".