1153373257 has 2 divisors, whose sum is σ = 1153373258. Its totient is φ = 1153373256.

The previous prime is 1153373251. The next prime is 1153373261. The reversal of 1153373257 is 7523733511.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1130371641 + 23001616 = 33621^2 + 4796^2 .

It is a cyclic number.

It is not a de Polignac number, because 1153373257 - 2¹⁹ = 1152848969 is a prime.

It is not a weakly prime, because it can be changed into another prime (1153373251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 576686628 + 576686629.

It is an arithmetic number, because the mean of its divisors is an integer number (576686629).

Almost surely, 2^1153373257 is an apocalyptic number.

It is an amenable number.

1153373257 is a deficient number, since it is larger than the sum of its proper divisors (1).

1153373257 is an equidigital number, since it uses as much as digits as its factorization.

1153373257 is an evil number, because the sum of its binary digits is even.

The product of its digits is 66150, while the sum is 37.

The square root of 1153373257 is about 33961.3494578764. The cubic root of 1153373257 is about 1048.7129375854.

The spelling of 1153373257 in words is "one billion, one hundred fifty-three million, three hundred seventy-three thousand, two hundred fifty-seven".