55308747 has 16 divisors (see below), whose sum is σ = 81566240. Its totient is φ = 33115392.

The previous prime is 55308739. The next prime is 55308751. The reversal of 55308747 is 74780355.

It is not a de Polignac number, because 55308747 - 2³ = 55308739 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55308347) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17722 + ... + 20607.

It is an arithmetic number, because the mean of its divisors is an integer number (5097890).

Almost surely, 2^55308747 is an apocalyptic number.

55308747 is a deficient number, since it is larger than the sum of its proper divisors (26257493).

55308747 is a wasteful number, since it uses less digits than its factorization.

55308747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38382.

The product of its (nonzero) digits is 117600, while the sum is 39.

The square root of 55308747 is about 7436.9850746119. The cubic root of 55308747 is about 381.0055248198.

The spelling of 55308747 in words is "fifty-five million, three hundred eight thousand, seven hundred forty-seven".