1057721358 has 32 divisors (see below), whose sum is σ = 2137707936. Its totient is φ = 348873728.

The previous prime is 1057721347. The next prime is 1057721359. The reversal of 1057721358 is 8531277501.

1057721358 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×1057721358² = 2237548942338728328, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1057721359) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 645316 + ... + 646952.

It is an arithmetic number, because the mean of its divisors is an integer number (66803373).

Almost surely, 2^1057721358 is an apocalyptic number.

1057721358 is an abundant number, since it is smaller than the sum of its proper divisors (1079986578).

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

1057721358 is a wasteful number, since it uses less digits than its factorization.

1057721358 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2708.

The product of its (nonzero) digits is 58800, while the sum is 39.

The square root of 1057721358 is about 32522.6283993161. The cubic root of 1057721358 is about 1018.8816905400.

Adding to 1057721358 its reverse (8531277501), we get a palindrome (9588998859).

The spelling of 1057721358 in words is "one billion, fifty-seven million, seven hundred twenty-one thousand, three hundred fifty-eight".