55207539 has 12 divisors (see below), whose sum is σ = 81096600. Its totient is φ = 36180864.

The previous prime is 55207513. The next prime is 55207543. The reversal of 55207539 is 93570255.

55207539 is a `hidden beast` number, since 552 + 0 + 75 + 39 = 666.

It is not a de Polignac number, because 55207539 - 2⁵ = 55207507 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55207639) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 51454 + ... + 52515.

It is an arithmetic number, because the mean of its divisors is an integer number (6758050).

Almost surely, 2^55207539 is an apocalyptic number.

55207539 is a gapful number since it is divisible by the number (59) formed by its first and last digit.

55207539 is a deficient number, since it is larger than the sum of its proper divisors (25889061).

55207539 is a wasteful number, since it uses less digits than its factorization.

55207539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104034 (or 104031 counting only the distinct ones).

The product of its (nonzero) digits is 47250, while the sum is 36.

The square root of 55207539 is about 7430.1775887256. The cubic root of 55207539 is about 380.7729856426.

The spelling of 55207539 in words is "fifty-five million, two hundred seven thousand, five hundred thirty-nine".