53257857972 has 24 divisors (see below), whose sum is σ = 135565456992. Its totient is φ = 16138744800.

The previous prime is 53257857971. The next prime is 53257857977. The reversal of 53257857972 is 27975875235.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53257857971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 201734179 + ... + 201734442.

It is an arithmetic number, because the mean of its divisors is an integer number (5648560708).

Almost surely, 2^53257857972 is an apocalyptic number.

It is an amenable number.

53257857972 is an abundant number, since it is smaller than the sum of its proper divisors (82307599020).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

53257857972 is a wasteful number, since it uses less digits than its factorization.

53257857972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 403468639 (or 403468637 counting only the distinct ones).

The product of its digits is 37044000, while the sum is 60.

The spelling of 53257857972 in words is "fifty-three billion, two hundred fifty-seven million, eight hundred fifty-seven thousand, nine hundred seventy-two".