55277345 has 16 divisors (see below), whose sum is σ = 67816128. Its totient is φ = 43243200.

The previous prime is 55277333. The next prime is 55277347. The reversal of 55277345 is 54377255.

It is not a de Polignac number, because 55277345 - 2¹² = 55273249 is a prime.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 55277299 and 55277308.

It is not an unprimeable number, because it can be changed into a prime (55277347) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52070 + ... + 53120.

It is an arithmetic number, because the mean of its divisors is an integer number (4238508).

Almost surely, 2^55277345 is an apocalyptic number.

It is an amenable number.

55277345 is a deficient number, since it is larger than the sum of its proper divisors (12538783).

55277345 is a wasteful number, since it uses less digits than its factorization.

55277345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1280.

The product of its digits is 147000, while the sum is 38.

The square root of 55277345 is about 7434.8735698733. The cubic root of 55277345 is about 380.9334048199.

The spelling of 55277345 in words is "fifty-five million, two hundred seventy-seven thousand, three hundred forty-five".