55038949 has 4 divisors (see below), whose sum is σ = 62901664. Its totient is φ = 47176236.

The previous prime is 55038937. The next prime is 55038983. The reversal of 55038949 is 94983055.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 55038949 - 2⁷ = 55038821 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55038749) 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, 3931347 + ... + 3931360.

It is an arithmetic number, because the mean of its divisors is an integer number (15725416).

Almost surely, 2^55038949 is an apocalyptic number.

It is an amenable number.

55038949 is a deficient number, since it is larger than the sum of its proper divisors (7862715).

55038949 is an equidigital number, since it uses as much as digits as its factorization.

55038949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7862714.

The product of its (nonzero) digits is 194400, while the sum is 43.

The square root of 55038949 is about 7418.8239634055. The cubic root of 55038949 is about 380.3849953152.

The spelling of 55038949 in words is "fifty-five million, thirty-eight thousand, nine hundred forty-nine".