55304247 has 32 divisors (see below), whose sum is σ = 82226880. Its totient is φ = 32901120.

The previous prime is 55304239. The next prime is 55304251. The reversal of 55304247 is 74240355.

It is not a de Polignac number, because 55304247 - 2³ = 55304239 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55304257) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 89913 + ... + 90525.

It is an arithmetic number, because the mean of its divisors is an integer number (2569590).

Almost surely, 2^55304247 is an apocalyptic number.

55304247 is a deficient number, since it is larger than the sum of its proper divisors (26922633).

55304247 is a wasteful number, since it uses less digits than its factorization.

55304247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 723.

The product of its (nonzero) digits is 16800, while the sum is 30.

The square root of 55304247 is about 7436.6825265033. The cubic root of 55304247 is about 380.9951914853.

The spelling of 55304247 in words is "fifty-five million, three hundred four thousand, two hundred forty-seven".