55777319 has 8 divisors (see below), whose sum is σ = 60284112. Its totient is φ = 51301440.

The previous prime is 55777313. The next prime is 55777333. The reversal of 55777319 is 91377755.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55777319 is a prime.

It is a super-2 number, since 2×55777319² = 6222218629655522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 55777319.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55777313) 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, 3902 + ... + 11259.

It is an arithmetic number, because the mean of its divisors is an integer number (7535514).

Almost surely, 2^55777319 is an apocalyptic number.

55777319 is a deficient number, since it is larger than the sum of its proper divisors (4506793).

55777319 is a wasteful number, since it uses less digits than its factorization.

55777319 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15457.

The product of its digits is 231525, while the sum is 44.

The square root of 55777319 is about 7468.4214530247. The cubic root of 55777319 is about 382.0784516741.

The spelling of 55777319 in words is "fifty-five million, seven hundred seventy-seven thousand, three hundred nineteen".