55284490 has 16 divisors (see below), whose sum is σ = 104749920. Its totient is φ = 20949840.

The previous prime is 55284461. The next prime is 55284499. The reversal of 55284490 is 9448255.

It is not an unprimeable number, because it can be changed into a prime (55284499) 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, 145296 + ... + 145675.

It is an arithmetic number, because the mean of its divisors is an integer number (6546870).

Almost surely, 2^55284490 is an apocalyptic number.

55284490 is a deficient number, since it is larger than the sum of its proper divisors (49465430).

55284490 is a wasteful number, since it uses less digits than its factorization.

55284490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 290997.

The product of its (nonzero) digits is 57600, while the sum is 37.

The square root of 55284490 is about 7435.3540601642. The cubic root of 55284490 is about 380.9498169197.

The spelling of 55284490 in words is "fifty-five million, two hundred eighty-four thousand, four hundred ninety".