55779305 has 4 divisors (see below), whose sum is σ = 66935172. Its totient is φ = 44623440.

The previous prime is 55779263. The next prime is 55779319. The reversal of 55779305 is 50397755.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50397755 = 5 ⋅10079551.

It can be written as a sum of positive squares in 2 ways, for example, as 19430464 + 36348841 = 4408^2 + 6029^2 .

It is not a de Polignac number, because 55779305 - 2⁸ = 55779049 is a prime.

It is a super-2 number, since 2×55779305² = 6222661732566050, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5577926 + ... + 5577935.

It is an arithmetic number, because the mean of its divisors is an integer number (16733793).

Almost surely, 2^55779305 is an apocalyptic number.

It is an amenable number.

55779305 is a deficient number, since it is larger than the sum of its proper divisors (11155867).

55779305 is a wasteful number, since it uses less digits than its factorization.

55779305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11155866.

The product of its (nonzero) digits is 165375, while the sum is 41.

The square root of 55779305 is about 7468.5544116650. The cubic root of 55779305 is about 382.0829863656.

The spelling of 55779305 in words is "fifty-five million, seven hundred seventy-nine thousand, three hundred five".