55147730 has 16 divisors (see below), whose sum is σ = 108290304. Its totient is φ = 20053680.

The previous prime is 55147679. The next prime is 55147733. The reversal of 55147730 is 3774155.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (55147733) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 250562 + ... + 250781.

It is an arithmetic number, because the mean of its divisors is an integer number (6768144).

Almost surely, 2^55147730 is an apocalyptic number.

55147730 is a deficient number, since it is larger than the sum of its proper divisors (53142574).

55147730 is a wasteful number, since it uses less digits than its factorization.

55147730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 501361.

The product of its (nonzero) digits is 14700, while the sum is 32.

The square root of 55147730 is about 7426.1517625214. The cubic root of 55147730 is about 380.6354326876.

The spelling of 55147730 in words is "fifty-five million, one hundred forty-seven thousand, seven hundred thirty".