381525953 has 2 divisors, whose sum is σ = 381525954. Its totient is φ = 381525952.

The previous prime is 381525923. The next prime is 381525967. The reversal of 381525953 is 359525183.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 340476304 + 41049649 = 18452^2 + 6407^2 .

It is an emirp because it is prime and its reverse (359525183) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-381525953 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 381525953.

It is not a weakly prime, because it can be changed into another prime (381525913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 190762976 + 190762977.

It is an arithmetic number, because the mean of its divisors is an integer number (190762977).

Almost surely, 2^381525953 is an apocalyptic number.

It is an amenable number.

381525953 is a deficient number, since it is larger than the sum of its proper divisors (1).

381525953 is an equidigital number, since it uses as much as digits as its factorization.

381525953 is an evil number, because the sum of its binary digits is even.

The product of its digits is 162000, while the sum is 41.

The square root of 381525953 is about 19532.6893437642. The cubic root of 381525953 is about 725.2838859714.

The spelling of 381525953 in words is "three hundred eighty-one million, five hundred twenty-five thousand, nine hundred fifty-three".