521486427 has 64 divisors (see below), whose sum is σ = 894136320. Its totient is φ = 262531200.

The previous prime is 521486423. The next prime is 521486431. The reversal of 521486427 is 724684125.

It is an interprime number because it is at equal distance from previous prime (521486423) and next prime (521486431).

It is not a de Polignac number, because 521486427 - 2² = 521486423 is a prime.

It is not an unprimeable number, because it can be changed into a prime (521486423) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1130977 + ... + 1131437.

It is an arithmetic number, because the mean of its divisors is an integer number (13970880).

Almost surely, 2^521486427 is an apocalyptic number.

521486427 is a deficient number, since it is larger than the sum of its proper divisors (372649893).

521486427 is a wasteful number, since it uses less digits than its factorization.

521486427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 624.

The product of its digits is 107520, while the sum is 39.

The square root of 521486427 is about 22836.0773120079. The cubic root of 521486427 is about 804.9106427055.

The spelling of 521486427 in words is "five hundred twenty-one million, four hundred eighty-six thousand, four hundred twenty-seven".