5498621591 has 4 divisors (see below), whose sum is σ = 5541917952. Its totient is φ = 5455325232.

The previous prime is 5498621587. The next prime is 5498621629. The reversal of 5498621591 is 1951268945.

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 5498621591 - 2² = 5498621587 is a prime.

It is a super-2 number, since 2×5498621591² = 60469678802022742562, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5498621501) 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, 21647990 + ... + 21648243.

It is an arithmetic number, because the mean of its divisors is an integer number (1385479488).

Almost surely, 2^5498621591 is an apocalyptic number.

5498621591 is a deficient number, since it is larger than the sum of its proper divisors (43296361).

5498621591 is a wasteful number, since it uses less digits than its factorization.

5498621591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43296360.

The product of its digits is 777600, while the sum is 50.

The square root of 5498621591 is about 74152.6910570345. The cubic root of 5498621591 is about 1765.0266927993.

The spelling of 5498621591 in words is "five billion, four hundred ninety-eight million, six hundred twenty-one thousand, five hundred ninety-one".