55091738 has 16 divisors (see below), whose sum is σ = 89336520. Its totient is φ = 25329216.

The previous prime is 55091737. The next prime is 55091753. The reversal of 55091738 is 83719055.

It can be written as a sum of positive squares in 4 ways, for example, as 13965169 + 41126569 = 3737^2 + 6413^2 .

It is not an unprimeable number, because it can be changed into a prime (55091737) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3056 + ... + 10932.

Almost surely, 2^55091738 is an apocalyptic number.

55091738 is a deficient number, since it is larger than the sum of its proper divisors (34244782).

55091738 is a wasteful number, since it uses less digits than its factorization.

55091738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8161.

The product of its (nonzero) digits is 37800, while the sum is 38.

The square root of 55091738 is about 7422.3808848644. The cubic root of 55091738 is about 380.5065681743.

The spelling of 55091738 in words is "fifty-five million, ninety-one thousand, seven hundred thirty-eight".