55825503581 has 8 divisors (see below), whose sum is σ = 58859562720. Its totient is φ = 52801031952.

The previous prime is 55825503577. The next prime is 55825503589. The reversal of 55825503581 is 18530552855.

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

It is a cyclic number.

It is not a de Polignac number, because 55825503581 - 2² = 55825503577 is a prime.

It is a super-2 number, since 2×55825503581² (a number of 22 digits) 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 (55825503589) 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, 2384915 + ... + 2408208.

It is an arithmetic number, because the mean of its divisors is an integer number (7357445340).

Almost surely, 2^55825503581 is an apocalyptic number.

It is an amenable number.

55825503581 is a deficient number, since it is larger than the sum of its proper divisors (3034059139).

55825503581 is a wasteful number, since it uses less digits than its factorization.

55825503581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4793755.

The product of its (nonzero) digits is 1200000, while the sum is 47.

The spelling of 55825503581 in words is "fifty-five billion, eight hundred twenty-five million, five hundred three thousand, five hundred eighty-one".