1047557957 has 8 divisors (see below), whose sum is σ = 1066059096. Its totient is φ = 1029169152.

The previous prime is 1047557911. The next prime is 1047557971. The reversal of 1047557957 is 7597557401.

It is a happy number.

It is a Cunningham number, because it is equal to 32366²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 594676996 + 452880961 = 24386^2 + 21281^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 1047557957 - 2¹⁶ = 1047492421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1047557657) 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, 9158 + ... + 46679.

It is an arithmetic number, because the mean of its divisors is an integer number (133257387).

Almost surely, 2^1047557957 is an apocalyptic number.

It is an amenable number.

1047557957 is a deficient number, since it is larger than the sum of its proper divisors (18501139).

1047557957 is an equidigital number, since it uses as much as digits as its factorization.

1047557957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56167.

The product of its (nonzero) digits is 1543500, while the sum is 50.

The square root of 1047557957 is about 32366.0000154483. Note that the first 4 decimals coincide. The cubic root of 1047557957 is about 1015.6077821043.

The spelling of 1047557957 in words is "one billion, forty-seven million, five hundred fifty-seven thousand, nine hundred fifty-seven".