55377443 has 16 divisors (see below), whose sum is σ = 63452160. Its totient is φ = 47863200.

The previous prime is 55377433. The next prime is 55377451. The reversal of 55377443 is 34477355.

It is not a de Polignac number, because 55377443 - 2⁶ = 55377379 is a prime.

It is a super-2 number, since 2×55377443² = 6133322386436498, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 55377397 and 55377406.

It is not an unprimeable number, because it can be changed into a prime (55377403) 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, 20078 + ... + 22668.

It is an arithmetic number, because the mean of its divisors is an integer number (3965760).

Almost surely, 2^55377443 is an apocalyptic number.

55377443 is a deficient number, since it is larger than the sum of its proper divisors (8074717).

55377443 is a wasteful number, since it uses less digits than its factorization.

55377443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2698.

The product of its digits is 176400, while the sum is 38.

The square root of 55377443 is about 7441.6021796385. The cubic root of 55377443 is about 381.1632016682.

The spelling of 55377443 in words is "fifty-five million, three hundred seventy-seven thousand, four hundred forty-three".