1157257573 has 2 divisors, whose sum is σ = 1157257574. Its totient is φ = 1157257572.

The previous prime is 1157257561. The next prime is 1157257579. The reversal of 1157257573 is 3757527511.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 969512769 + 187744804 = 31137^2 + 13702^2 .

It is an emirp because it is prime and its reverse (3757527511) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1157257573 - 2¹⁷ = 1157126501 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1157257579) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 578628786 + 578628787.

It is an arithmetic number, because the mean of its divisors is an integer number (578628787).

Almost surely, 2^1157257573 is an apocalyptic number.

It is an amenable number.

1157257573 is a deficient number, since it is larger than the sum of its proper divisors (1).

1157257573 is an equidigital number, since it uses as much as digits as its factorization.

1157257573 is an evil number, because the sum of its binary digits is even.

The product of its digits is 257250, while the sum is 43.

The square root of 1157257573 is about 34018.4886936501. The cubic root of 1157257573 is about 1049.8888992047. Note that the first 4 decimals are identical.

The spelling of 1157257573 in words is "one billion, one hundred fifty-seven million, two hundred fifty-seven thousand, five hundred seventy-three".