5591969501 has 4 divisors (see below), whose sum is σ = 5592147132. Its totient is φ = 5591791872.

The previous prime is 5591969497. The next prime is 5591969519. The reversal of 5591969501 is 1059691955.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2279967001 + 3312002500 = 47749^2 + 57550^2 .

It is a cyclic number.

It is not a de Polignac number, because 5591969501 - 2² = 5591969497 is a prime.

It is a super-2 number, since 2×5591969501² = 62540245800228378002, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 5591969501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5591969521) 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, 27470 + ... + 109263.

It is an arithmetic number, because the mean of its divisors is an integer number (1398036783).

Almost surely, 2^5591969501 is an apocalyptic number.

It is an amenable number.

5591969501 is a deficient number, since it is larger than the sum of its proper divisors (177631).

5591969501 is a wasteful number, since it uses less digits than its factorization.

5591969501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177630.

The product of its (nonzero) digits is 546750, while the sum is 50.

The square root of 5591969501 is about 74779.4724573529. The cubic root of 5591969501 is about 1774.9587507177.

The spelling of 5591969501 in words is "five billion, five hundred ninety-one million, nine hundred sixty-nine thousand, five hundred one".