1153745057 has 4 divisors (see below), whose sum is σ = 1153847940. Its totient is φ = 1153642176.

The previous prime is 1153745023. The next prime is 1153745081. The reversal of 1153745057 is 7505473511.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 7505473511 = 1553 ⋅4832887.

It can be written as a sum of positive squares in 2 ways, for example, as 274266721 + 879478336 = 16561^2 + 29656^2 .

It is a cyclic number.

It is not a de Polignac number, because 1153745057 - 2¹⁶ = 1153679521 is a prime.

It is a super-2 number, since 2×1153745057² = 2662255313103866498, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1153745057.

It is not an unprimeable number, because it can be changed into a prime (1153745557) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32228 + ... + 57845.

It is an arithmetic number, because the mean of its divisors is an integer number (288461985).

Almost surely, 2^1153745057 is an apocalyptic number.

It is an amenable number.

1153745057 is a deficient number, since it is larger than the sum of its proper divisors (102883).

1153745057 is an equidigital number, since it uses as much as digits as its factorization.

1153745057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102882.

The product of its (nonzero) digits is 73500, while the sum is 38.

The square root of 1153745057 is about 33966.8228864579. The cubic root of 1153745057 is about 1048.8256127546.

The spelling of 1153745057 in words is "one billion, one hundred fifty-three million, seven hundred forty-five thousand, fifty-seven".