2057397556 has 12 divisors (see below), whose sum is σ = 3613445668. Its totient is φ = 1024984512.

The previous prime is 2057397527. The next prime is 2057397571. The reversal of 2057397556 is 6557937502.

It can be written as a sum of positive squares in 2 ways, for example, as 824264100 + 1233133456 = 28710^2 + 35116^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 927321 + ... + 929536.

Almost surely, 2^2057397556 is an apocalyptic number.

It is an amenable number.

2057397556 is a deficient number, since it is larger than the sum of its proper divisors (1556048112).

2057397556 is a wasteful number, since it uses less digits than its factorization.

2057397556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1857138 (or 1857136 counting only the distinct ones).

The product of its (nonzero) digits is 1984500, while the sum is 49.

The square root of 2057397556 is about 45358.5444651832. The cubic root of 2057397556 is about 1271.8602857041.

The spelling of 2057397556 in words is "two billion, fifty-seven million, three hundred ninety-seven thousand, five hundred fifty-six".