2513057805 has 90 divisors (see below), whose sum is σ = 4691260266. Its totient is φ = 1287029952.

The previous prime is 2513057801. The next prime is 2513057837. The reversal of 2513057805 is 5087503152.

2513057805 is a `hidden beast` number, since 2 + 51 + 30 + 578 + 0 + 5 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 687803076 + 1825254729 = 26226^2 + 42723^2 .

It is not a de Polignac number, because 2513057805 - 2² = 2513057801 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2513057805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2513057801) by changing a digit.

It is a polite number, since it can be written in 89 ways as a sum of consecutive naturals, for example, 47416159 + ... + 47416211.

Almost surely, 2^2513057805 is an apocalyptic number.

It is an amenable number.

2513057805 is a deficient number, since it is larger than the sum of its proper divisors (2178202461).

2513057805 is an frugal number, since it uses more digits than its factorization.

2513057805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217 (or 108 counting only the distinct ones).

The product of its (nonzero) digits is 42000, while the sum is 36.

The square root of 2513057805 is about 50130.4079875678. The cubic root of 2513057805 is about 1359.5676619202.

The spelling of 2513057805 in words is "two billion, five hundred thirteen million, fifty-seven thousand, eight hundred five".