2513551123 has 4 divisors (see below), whose sum is σ = 2515349200. Its totient is φ = 2511753048.

The previous prime is 2513551121. The next prime is 2513551151. The reversal of 2513551123 is 3211553152.

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

It is a cyclic number.

It is not a de Polignac number, because 2513551123 - 2¹ = 2513551121 is a prime.

It is a super-2 number, since 2×2513551123² = 12635878495869122258, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2513551091 and 2513551100.

It is not an unprimeable number, because it can be changed into a prime (2513551121) 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, 896940 + ... + 899737.

It is an arithmetic number, because the mean of its divisors is an integer number (628837300).

Almost surely, 2^2513551123 is an apocalyptic number.

2513551123 is a deficient number, since it is larger than the sum of its proper divisors (1798077).

2513551123 is a wasteful number, since it uses less digits than its factorization.

2513551123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1798076.

The product of its digits is 4500, while the sum is 28.

The square root of 2513551123 is about 50135.3280930723. The cubic root of 2513551123 is about 1359.6566180008.

The spelling of 2513551123 in words is "two billion, five hundred thirteen million, five hundred fifty-one thousand, one hundred twenty-three".