521253527 has 2 divisors, whose sum is σ = 521253528. Its totient is φ = 521253526.

The previous prime is 521253497. The next prime is 521253553. The reversal of 521253527 is 725352125.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 521253527 - 2²² = 517059223 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 521253493 and 521253502.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (521253427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260626763 + 260626764.

It is an arithmetic number, because the mean of its divisors is an integer number (260626764).

Almost surely, 2^521253527 is an apocalyptic number.

521253527 is a deficient number, since it is larger than the sum of its proper divisors (1).

521253527 is an equidigital number, since it uses as much as digits as its factorization.

521253527 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21000, while the sum is 32.

The square root of 521253527 is about 22830.9773553390. The cubic root of 521253527 is about 804.7907983570.

The spelling of 521253527 in words is "five hundred twenty-one million, two hundred fifty-three thousand, five hundred twenty-seven".