55307377 has 4 divisors (see below), whose sum is σ = 55379700. Its totient is φ = 55235056.

The previous prime is 55307353. The next prime is 55307381. The reversal of 55307377 is 77370355.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 77370355 = 5 ⋅15474071.

It can be written as a sum of positive squares in 2 ways, for example, as 4669921 + 50637456 = 2161^2 + 7116^2 .

It is a cyclic number.

It is not a de Polignac number, because 55307377 - 2¹¹ = 55305329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55307327) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35002 + ... + 36547.

It is an arithmetic number, because the mean of its divisors is an integer number (13844925).

Almost surely, 2^55307377 is an apocalyptic number.

It is an amenable number.

55307377 is a deficient number, since it is larger than the sum of its proper divisors (72323).

55307377 is an equidigital number, since it uses as much as digits as its factorization.

55307377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72322.

The product of its (nonzero) digits is 77175, while the sum is 37.

The square root of 55307377 is about 7436.8929668243. The cubic root of 55307377 is about 381.0023789529.

The spelling of 55307377 in words is "fifty-five million, three hundred seven thousand, three hundred seventy-seven".