5191472421 has 24 divisors (see below), whose sum is σ = 7615992384. Its totient is φ = 3406962240.

The previous prime is 5191472389. The next prime is 5191472423. The reversal of 5191472421 is 1242741915.

5191472421 is a `hidden beast` number, since 5 + 191 + 47 + 2 + 421 = 666.

It is not a de Polignac number, because 5191472421 - 2⁵ = 5191472389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5191472423) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1470160 + ... + 1473686.

It is an arithmetic number, because the mean of its divisors is an integer number (317333016).

Almost surely, 2^5191472421 is an apocalyptic number.

It is an amenable number.

5191472421 is a deficient number, since it is larger than the sum of its proper divisors (2424519963).

5191472421 is a wasteful number, since it uses less digits than its factorization.

5191472421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6041 (or 6038 counting only the distinct ones).

The product of its digits is 20160, while the sum is 36.

The square root of 5191472421 is about 72051.8731262415. The cubic root of 5191472421 is about 1731.5306511855.

The spelling of 5191472421 in words is "five billion, one hundred ninety-one million, four hundred seventy-two thousand, four hundred twenty-one".