55330577 has 4 divisors (see below), whose sum is σ = 56826036. Its totient is φ = 53835120.

The previous prime is 55330549. The next prime is 55330619. The reversal of 55330577 is 77503355.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 77503355 = 5 ⋅15500671.

It can be written as a sum of positive squares in 2 ways, for example, as 50353216 + 4977361 = 7096^2 + 2231^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55330577 is a prime.

It is a super-2 number, since 2×55330577² = 6122945502305858, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55330507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 747674 + ... + 747747.

It is an arithmetic number, because the mean of its divisors is an integer number (14206509).

Almost surely, 2^55330577 is an apocalyptic number.

It is an amenable number.

55330577 is a deficient number, since it is larger than the sum of its proper divisors (1495459).

55330577 is a wasteful number, since it uses less digits than its factorization.

55330577 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1495458.

The product of its (nonzero) digits is 55125, while the sum is 35.

The square root of 55330577 is about 7438.4525944581. The cubic root of 55330577 is about 381.0556450210.

The spelling of 55330577 in words is "fifty-five million, three hundred thirty thousand, five hundred seventy-seven".