5393256661 has 4 divisors (see below), whose sum is σ = 5808122572. Its totient is φ = 4978390752.

The previous prime is 5393256653. The next prime is 5393256677. The reversal of 5393256661 is 1666523935.

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 742835025 + 4650421636 = 27255^2 + 68194^2 .

It is a cyclic number.

It is not a de Polignac number, because 5393256661 - 2³ = 5393256653 is a prime.

It is a super-2 number, since 2×5393256661² = 58174434822841737842, 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 (5393256691) 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, 207432936 + ... + 207432961.

It is an arithmetic number, because the mean of its divisors is an integer number (1452030643).

Almost surely, 2^5393256661 is an apocalyptic number.

It is an amenable number.

5393256661 is a deficient number, since it is larger than the sum of its proper divisors (414865911).

5393256661 is a wasteful number, since it uses less digits than its factorization.

5393256661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 414865910.

The product of its digits is 874800, while the sum is 46.

The square root of 5393256661 is about 73438.7953400653. The cubic root of 5393256661 is about 1753.6800556638.

The spelling of 5393256661 in words is "five billion, three hundred ninety-three million, two hundred fifty-six thousand, six hundred sixty-one".