53998777 has 4 divisors (see below), whose sum is σ = 61712896. Its totient is φ = 46284660.

The previous prime is 53998771. The next prime is 53998793. The reversal of 53998777 is 77789935.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 53998777 - 2⁷ = 53998649 is a prime.

It is not an unprimeable number, because it can be changed into a prime (53998771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3857049 + ... + 3857062.

It is an arithmetic number, because the mean of its divisors is an integer number (15428224).

Almost surely, 2^53998777 is an apocalyptic number.

It is an amenable number.

53998777 is a deficient number, since it is larger than the sum of its proper divisors (7714119).

53998777 is an equidigital number, since it uses as much as digits as its factorization.

53998777 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7714118.

The product of its digits is 3333960, while the sum is 55.

The square root of 53998777 is about 7348.3860132685. The cubic root of 53998777 is about 377.9734614591.

The spelling of 53998777 in words is "fifty-three million, nine hundred ninety-eight thousand, seven hundred seventy-seven".