55779825 has 12 divisors (see below), whose sum is σ = 92222768. Its totient is φ = 29749200.

The previous prime is 55779821. The next prime is 55779827. The reversal of 55779825 is 52897755.

55779825 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 55779825 - 2² = 55779821 is a prime.

It is a super-2 number, since 2×55779825² = 6222777754061250, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55779821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 371791 + ... + 371940.

Almost surely, 2^55779825 is an apocalyptic number.

It is an amenable number.

55779825 is a deficient number, since it is larger than the sum of its proper divisors (36442943).

55779825 is a wasteful number, since it uses less digits than its factorization.

55779825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 743744 (or 743739 counting only the distinct ones).

The product of its digits is 882000, while the sum is 48.

The square root of 55779825 is about 7468.5892242110. The cubic root of 55779825 is about 382.0841736789.

The spelling of 55779825 in words is "fifty-five million, seven hundred seventy-nine thousand, eight hundred twenty-five".