5501787491 has 2 divisors, whose sum is σ = 5501787492. Its totient is φ = 5501787490.

The previous prime is 5501787463. The next prime is 5501787541. The reversal of 5501787491 is 1947871055.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5501787491 - 2¹⁰ = 5501786467 is a prime.

It is a super-2 number, since 2×5501787491² = 60539331192248150162, which contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (5501787691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2750893745 + 2750893746.

It is an arithmetic number, because the mean of its divisors is an integer number (2750893746).

Almost surely, 2^5501787491 is an apocalyptic number.

5501787491 is a deficient number, since it is larger than the sum of its proper divisors (1).

5501787491 is an equidigital number, since it uses as much as digits as its factorization.

5501787491 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 352800, while the sum is 47.

The square root of 5501787491 is about 74174.0351538192. The cubic root of 5501787491 is about 1765.3653731894.

The spelling of 5501787491 in words is "five billion, five hundred one million, seven hundred eighty-seven thousand, four hundred ninety-one".