5194456521 has 8 divisors (see below), whose sum is σ = 6957000960. Its totient is φ = 3447441552.

The previous prime is 5194456511. The next prime is 5194456537. The reversal of 5194456521 is 1256544915.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 5194456521 - 2¹⁸ = 5194194377 is a prime.

It is not an unprimeable number, because it can be changed into a prime (5194456511) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3881586 + ... + 3882923.

It is an arithmetic number, because the mean of its divisors is an integer number (869625120).

Almost surely, 2^5194456521 is an apocalyptic number.

It is an amenable number.

5194456521 is a deficient number, since it is larger than the sum of its proper divisors (1762544439).

5194456521 is a wasteful number, since it uses less digits than its factorization.

5194456521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7764735.

The product of its digits is 216000, while the sum is 42.

The square root of 5194456521 is about 72072.5781486967. The cubic root of 5194456521 is about 1731.8623535421.

The spelling of 5194456521 in words is "five billion, one hundred ninety-four million, four hundred fifty-six thousand, five hundred twenty-one".