1055638257 has 16 divisors (see below), whose sum is σ = 1455355392. Its totient is φ = 679916160.

The previous prime is 1055638223. The next prime is 1055638301. The reversal of 1055638257 is 7528365501.

It is not a de Polignac number, because 1055638257 - 2¹⁴ = 1055621873 is a prime.

It is a super-3 number, since 3×1055638257³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (1055638457) 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 15 ways as a sum of consecutive naturals, for example, 48183 + ... + 66579.

It is an arithmetic number, because the mean of its divisors is an integer number (90959712).

Almost surely, 2^1055638257 is an apocalyptic number.

It is an amenable number.

1055638257 is a deficient number, since it is larger than the sum of its proper divisors (399717135).

1055638257 is a wasteful number, since it uses less digits than its factorization.

1055638257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19048.

The product of its (nonzero) digits is 252000, while the sum is 42.

The square root of 1055638257 is about 32490.5872061433. The cubic root of 1055638257 is about 1018.2123812107.

The spelling of 1055638257 in words is "one billion, fifty-five million, six hundred thirty-eight thousand, two hundred fifty-seven".