7874527521 has 16 divisors (see below), whose sum is σ = 12278334464. Its totient is φ = 4395084624.

The previous prime is 7874527459. The next prime is 7874527547. The reversal of 7874527521 is 1257254787.

It is not a de Polignac number, because 7874527521 - 2¹¹ = 7874525473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7874527021) 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, 4359301 + ... + 4361106.

It is an arithmetic number, because the mean of its divisors is an integer number (767395904).

Almost surely, 2^7874527521 is an apocalyptic number.

It is an amenable number.

7874527521 is a deficient number, since it is larger than the sum of its proper divisors (4403806943).

7874527521 is a wasteful number, since it uses less digits than its factorization.

7874527521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8720460.

The product of its digits is 1097600, while the sum is 48.

The square root of 7874527521 is about 88738.5345889823. The cubic root of 7874527521 is about 1989.4888143488.

The spelling of 7874527521 in words is "seven billion, eight hundred seventy-four million, five hundred twenty-seven thousand, five hundred twenty-one".