1051656257 has 2 divisors, whose sum is σ = 1051656258. Its totient is φ = 1051656256.

The previous prime is 1051656253. The next prime is 1051656271. The reversal of 1051656257 is 7526561501.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 840942001 + 210714256 = 28999^2 + 14516^2 .

It is a cyclic number.

It is not a de Polignac number, because 1051656257 - 2² = 1051656253 is a prime.

It is a super-2 number, since 2×1051656257² = 2211961765774500098, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1051656257.

It is not a weakly prime, because it can be changed into another prime (1051656253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 525828128 + 525828129.

It is an arithmetic number, because the mean of its divisors is an integer number (525828129).

Almost surely, 2^1051656257 is an apocalyptic number.

It is an amenable number.

1051656257 is a deficient number, since it is larger than the sum of its proper divisors (1).

1051656257 is an equidigital number, since it uses as much as digits as its factorization.

1051656257 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 63000, while the sum is 38.

The square root of 1051656257 is about 32429.2500221636. The cubic root of 1051656257 is about 1016.9304930763.

The spelling of 1051656257 in words is "one billion, fifty-one million, six hundred fifty-six thousand, two hundred fifty-seven".