1065157057 has 4 divisors (see below), whose sum is σ = 1065228736. Its totient is φ = 1065085380.

The previous prime is 1065157039. The next prime is 1065157103. The reversal of 1065157057 is 7507515601.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 7507515601 = 233 ⋅32221097.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1065157057 is a prime.

It is a super-2 number, since 2×1065157057² = 2269119112153802498, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1065151057) 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, 4293 + ... + 46354.

It is an arithmetic number, because the mean of its divisors is an integer number (266307184).

Almost surely, 2^1065157057 is an apocalyptic number.

It is an amenable number.

1065157057 is a deficient number, since it is larger than the sum of its proper divisors (71679).

1065157057 is an equidigital number, since it uses as much as digits as its factorization.

1065157057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71678.

The product of its (nonzero) digits is 36750, while the sum is 37.

The square root of 1065157057 is about 32636.7439705618. The cubic root of 1065157057 is about 1021.2636705691.

The spelling of 1065157057 in words is "one billion, sixty-five million, one hundred fifty-seven thousand, fifty-seven".