1147751257 has 2 divisors, whose sum is σ = 1147751258. Its totient is φ = 1147751256.

The previous prime is 1147751237. The next prime is 1147751261. The reversal of 1147751257 is 7521577411.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1114157641 + 33593616 = 33379^2 + 5796^2 .

It is a cyclic number.

It is not a de Polignac number, because 1147751257 - 2¹⁵ = 1147718489 is a prime.

It is not a weakly prime, because it can be changed into another prime (1147751237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 573875628 + 573875629.

It is an arithmetic number, because the mean of its divisors is an integer number (573875629).

Almost surely, 2^1147751257 is an apocalyptic number.

It is an amenable number.

1147751257 is a deficient number, since it is larger than the sum of its proper divisors (1).

1147751257 is an equidigital number, since it uses as much as digits as its factorization.

1147751257 is an evil number, because the sum of its binary digits is even.

The product of its digits is 68600, while the sum is 40.

The square root of 1147751257 is about 33878.4777845759. The cubic root of 1147751257 is about 1047.0062134984.

The spelling of 1147751257 in words is "one billion, one hundred forty-seven million, seven hundred fifty-one thousand, two hundred fifty-seven".