5497161491 has 4 divisors (see below), whose sum is σ = 5786485800. Its totient is φ = 5207837184.

The previous prime is 5497161479. The next prime is 5497161499. The reversal of 5497161491 is 1941617945.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 5497161491 - 2⁶ = 5497161427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5497161499) 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, 144662126 + ... + 144662163.

It is an arithmetic number, because the mean of its divisors is an integer number (1446621450).

Almost surely, 2^5497161491 is an apocalyptic number.

5497161491 is a deficient number, since it is larger than the sum of its proper divisors (289324309).

5497161491 is a wasteful number, since it uses less digits than its factorization.

5497161491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289324308.

The product of its digits is 272160, while the sum is 47.

The square root of 5497161491 is about 74142.8451774006. The cubic root of 5497161491 is about 1764.8704509986.

The spelling of 5497161491 in words is "five billion, four hundred ninety-seven million, one hundred sixty-one thousand, four hundred ninety-one".