55739907 has 10 divisors (see below), whose sum is σ = 83265908. Its totient is φ = 37159884.

The previous prime is 55739903. The next prime is 55739917. The reversal of 55739907 is 70993755.

It is a happy number.

55739907 is a `hidden beast` number, since 557 + 3 + 9 + 90 + 7 = 666.

It is not a de Polignac number, because 55739907 - 2² = 55739903 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55739903) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 343993 + ... + 344154.

Almost surely, 2^55739907 is an apocalyptic number.

55739907 is a deficient number, since it is larger than the sum of its proper divisors (27526001).

55739907 is an equidigital number, since it uses as much as digits as its factorization.

55739907 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 688159 (or 688150 counting only the distinct ones).

The product of its (nonzero) digits is 297675, while the sum is 45.

The square root of 55739907 is about 7465.9163536702. The cubic root of 55739907 is about 381.9930076477.

The spelling of 55739907 in words is "fifty-five million, seven hundred thirty-nine thousand, nine hundred seven".