821461052 has 24 divisors (see below), whose sum is σ = 1449859824. Its totient is φ = 407227392.

The previous prime is 821461051. The next prime is 821461093. The reversal of 821461052 is 250164128.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (821461051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 361223 + ... + 363489.

It is an arithmetic number, because the mean of its divisors is an integer number (60410826).

Almost surely, 2^821461052 is an apocalyptic number.

It is an amenable number.

821461052 is a deficient number, since it is larger than the sum of its proper divisors (628398772).

821461052 is a wasteful number, since it uses less digits than its factorization.

821461052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3005 (or 3003 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 29.

The square root of 821461052 is about 28661.1418474561. The cubic root of 821461052 is about 936.5457391000.

The spelling of 821461052 in words is "eight hundred twenty-one million, four hundred sixty-one thousand, fifty-two".