525381947 has 2 divisors, whose sum is σ = 525381948. Its totient is φ = 525381946.

The previous prime is 525381929. The next prime is 525381953. The reversal of 525381947 is 749183525.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-525381947 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 525381898 and 525381907.

It is not a weakly prime, because it can be changed into another prime (525381247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 262690973 + 262690974.

It is an arithmetic number, because the mean of its divisors is an integer number (262690974).

Almost surely, 2^525381947 is an apocalyptic number.

525381947 is a deficient number, since it is larger than the sum of its proper divisors (1).

525381947 is an equidigital number, since it uses as much as digits as its factorization.

525381947 is an evil number, because the sum of its binary digits is even.

The product of its digits is 302400, while the sum is 44.

The square root of 525381947 is about 22921.2117262592. The cubic root of 525381947 is about 806.9099086785.

The spelling of 525381947 in words is "five hundred twenty-five million, three hundred eighty-one thousand, nine hundred forty-seven".