1012523857 has 2 divisors, whose sum is σ = 1012523858. Its totient is φ = 1012523856.

The previous prime is 1012523807. The next prime is 1012523879. The reversal of 1012523857 is 7583252101.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 890664336 + 121859521 = 29844^2 + 11039^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1012523857 is a prime.

It is not a weakly prime, because it can be changed into another prime (1012523807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 506261928 + 506261929.

It is an arithmetic number, because the mean of its divisors is an integer number (506261929).

Almost surely, 2^1012523857 is an apocalyptic number.

It is an amenable number.

1012523857 is a deficient number, since it is larger than the sum of its proper divisors (1).

1012523857 is an equidigital number, since it uses as much as digits as its factorization.

1012523857 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16800, while the sum is 34.

The square root of 1012523857 is about 31820.1800277748. The cubic root of 1012523857 is about 1004.1573118079.

Adding to 1012523857 its reverse (7583252101), we get a palindrome (8595775958).

The spelling of 1012523857 in words is "one billion, twelve million, five hundred twenty-three thousand, eight hundred fifty-seven".