55038247 has 4 divisors (see below), whose sum is σ = 60041736. Its totient is φ = 50034760.

The previous prime is 55038239. The next prime is 55038253. The reversal of 55038247 is 74283055.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 55038247 - 2³ = 55038239 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55038257) 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, 2501728 + ... + 2501749.

It is an arithmetic number, because the mean of its divisors is an integer number (15010434).

Almost surely, 2^55038247 is an apocalyptic number.

55038247 is a deficient number, since it is larger than the sum of its proper divisors (5003489).

55038247 is a wasteful number, since it uses less digits than its factorization.

55038247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5003488.

The product of its (nonzero) digits is 33600, while the sum is 34.

The square root of 55038247 is about 7418.7766511737. The cubic root of 55038247 is about 380.3833780883.

The spelling of 55038247 in words is "fifty-five million, thirty-eight thousand, two hundred forty-seven".