5111561603 has 4 divisors (see below), whose sum is σ = 5112335880. Its totient is φ = 5110787328.

The previous prime is 5111561597. The next prime is 5111561617. The reversal of 5111561603 is 3061651115.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3061651115 = 5 ⋅612330223.

It is a cyclic number.

It is not a de Polignac number, because 5111561603 - 2¹⁰ = 5111560579 is a prime.

It is a super-2 number, since 2×5111561603² = 52256124042527859218, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5111561633) 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, 377150 + ... + 390467.

It is an arithmetic number, because the mean of its divisors is an integer number (1278083970).

Almost surely, 2^5111561603 is an apocalyptic number.

5111561603 is a deficient number, since it is larger than the sum of its proper divisors (774277).

5111561603 is an equidigital number, since it uses as much as digits as its factorization.

5111561603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 774276.

The product of its (nonzero) digits is 2700, while the sum is 29.

The square root of 5111561603 is about 71495.1858728964. The cubic root of 5111561603 is about 1722.6003576505.

The spelling of 5111561603 in words is "five billion, one hundred eleven million, five hundred sixty-one thousand, six hundred three".