5213450991 has 24 divisors (see below), whose sum is σ = 8091110784. Its totient is φ = 2977294320.

The previous prime is 5213450969. The next prime is 5213450993. The reversal of 5213450991 is 1990543125.

It is not a de Polignac number, because 5213450991 - 2⁶ = 5213450927 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5213450993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 252156 + ... + 272046.

It is an arithmetic number, because the mean of its divisors is an integer number (337129616).

Almost surely, 2^5213450991 is an apocalyptic number.

5213450991 is a deficient number, since it is larger than the sum of its proper divisors (2877659793).

5213450991 is a wasteful number, since it uses less digits than its factorization.

5213450991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21691 (or 21684 counting only the distinct ones).

The product of its (nonzero) digits is 48600, while the sum is 39.

The square root of 5213450991 is about 72204.2311156348. The cubic root of 5213450991 is about 1733.9707417282.

The spelling of 5213450991 in words is "five billion, two hundred thirteen million, four hundred fifty thousand, nine hundred ninety-one".