55120738 has 8 divisors (see below), whose sum is σ = 83229120. Its totient is φ = 27377700.

The previous prime is 55120733. The next prime is 55120753. The reversal of 55120738 is 83702155.

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

It is a super-4 number, since 4×55120738⁴ (a number of 32 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (55120733) 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, 90958 + ... + 91561.

It is an arithmetic number, because the mean of its divisors is an integer number (10403640).

Almost surely, 2^55120738 is an apocalyptic number.

55120738 is a deficient number, since it is larger than the sum of its proper divisors (28108382).

55120738 is a wasteful number, since it uses less digits than its factorization.

55120738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182672.

The product of its (nonzero) digits is 8400, while the sum is 31.

The square root of 55120738 is about 7424.3341789012. The cubic root of 55120738 is about 380.5733220122.

The spelling of 55120738 in words is "fifty-five million, one hundred twenty thousand, seven hundred thirty-eight".