1057201521 has 8 divisors (see below), whose sum is σ = 1409820000. Its totient is φ = 704692032.

The previous prime is 1057201517. The next prime is 1057201529. The reversal of 1057201521 is 1251027501.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1057201521 - 2² = 1057201517 is a prime.

It is a super-2 number, since 2×1057201521² = 2235350112009426882, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1057201491 and 1057201500.

It is not an unprimeable number, because it can be changed into a prime (1057201529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1000 + ... + 45993.

It is an arithmetic number, because the mean of its divisors is an integer number (176227500).

Almost surely, 2^1057201521 is an apocalyptic number.

It is an amenable number.

1057201521 is a deficient number, since it is larger than the sum of its proper divisors (352618479).

1057201521 is an equidigital number, since it uses as much as digits as its factorization.

1057201521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54495.

The product of its (nonzero) digits is 700, while the sum is 24.

The square root of 1057201521 is about 32514.6354892685. The cubic root of 1057201521 is about 1018.7147470155.

The spelling of 1057201521 in words is "one billion, fifty-seven million, two hundred one thousand, five hundred twenty-one".