55779833 has 2 divisors, whose sum is σ = 55779834. Its totient is φ = 55779832.

The previous prime is 55779827. The next prime is 55779863. The reversal of 55779833 is 33897755.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51079609 + 4700224 = 7147^2 + 2168^2 .

It is a cyclic number.

It is not a de Polignac number, because 55779833 - 2⁴ = 55779817 is a prime.

It is a super-2 number, since 2×55779833² = 6222779539015778, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (55779863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27889916 + 27889917.

It is an arithmetic number, because the mean of its divisors is an integer number (27889917).

Almost surely, 2^55779833 is an apocalyptic number.

It is an amenable number.

55779833 is a deficient number, since it is larger than the sum of its proper divisors (1).

55779833 is an equidigital number, since it uses as much as digits as its factorization.

55779833 is an evil number, because the sum of its binary digits is even.

The product of its digits is 793800, while the sum is 47.

The square root of 55779833 is about 7468.5897597873. The cubic root of 55779833 is about 382.0841919452.

The spelling of 55779833 in words is "fifty-five million, seven hundred seventy-nine thousand, eight hundred thirty-three".