54555390 has 128 divisors (see below), whose sum is σ = 154091520. Its totient is φ = 13716864.

The previous prime is 54555367. The next prime is 54555401. The reversal of 54555390 is 9355545.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 429507 + ... + 429633.

It is an arithmetic number, because the mean of its divisors is an integer number (1203840).

Almost surely, 2^54555390 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 54555390, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77045760).

54555390 is an abundant number, since it is smaller than the sum of its proper divisors (99536130).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

54555390 is a wasteful number, since it uses less digits than its factorization.

54555390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223 (or 217 counting only the distinct ones).

The product of its (nonzero) digits is 67500, while the sum is 36.

The square root of 54555390 is about 7386.1620615852. The cubic root of 54555390 is about 379.2677264466.

It can be divided in two parts, 54555 and 390, that added together give a palindrome (54945).

The spelling of 54555390 in words is "fifty-four million, five hundred fifty-five thousand, three hundred ninety".