55148290 has 16 divisors (see below), whose sum is σ = 99535680. Its totient is φ = 21999600.

The previous prime is 55148281. The next prime is 55148293. The reversal of 55148290 is 9284155.

55148290 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (55148293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3486 + ... + 11065.

It is an arithmetic number, because the mean of its divisors is an integer number (6220980).

Almost surely, 2^55148290 is an apocalyptic number.

55148290 is a deficient number, since it is larger than the sum of its proper divisors (44387390).

55148290 is a wasteful number, since it uses less digits than its factorization.

55148290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14937.

The product of its (nonzero) digits is 14400, while the sum is 34.

The square root of 55148290 is about 7426.1894670147. The cubic root of 55148290 is about 380.6367210762.

It can be divided in two parts, 551 and 48290, that added together give a square (48841 = 221²).

The spelling of 55148290 in words is "fifty-five million, one hundred forty-eight thousand, two hundred ninety".