1157073503 has 4 divisors (see below), whose sum is σ = 1157392368. Its totient is φ = 1156754640.

The previous prime is 1157073479. The next prime is 1157073529. The reversal of 1157073503 is 3053707511.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1157073503 is a prime.

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 1157073503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1157073403) 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, 153926 + ... + 161267.

It is an arithmetic number, because the mean of its divisors is an integer number (289348092).

Almost surely, 2^1157073503 is an apocalyptic number.

1157073503 is a deficient number, since it is larger than the sum of its proper divisors (318865).

1157073503 is an equidigital number, since it uses as much as digits as its factorization.

1157073503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318864.

The product of its (nonzero) digits is 11025, while the sum is 32.

The square root of 1157073503 is about 34015.7831454753. The cubic root of 1157073503 is about 1049.8332321688.

The spelling of 1157073503 in words is "one billion, one hundred fifty-seven million, seventy-three thousand, five hundred three".