55455000 has 80 divisors (see below), whose sum is σ = 173288280. Its totient is φ = 14784000.

The previous prime is 55454983. The next prime is 55455007. The reversal of 55455000 is 55455.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55455007) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 13152 + ... + 16848.

Almost surely, 2^55455000 is an apocalyptic number.

55455000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55455000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86644140).

55455000 is an abundant number, since it is smaller than the sum of its proper divisors (117833280).

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

55455000 is a wasteful number, since it uses less digits than its factorization.

55455000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3726 (or 3707 counting only the distinct ones).

The product of its (nonzero) digits is 2500, while the sum is 24.

The square root of 55455000 is about 7446.8113981757. The cubic root of 55455000 is about 381.3410603951.

55455000 divided by its reverse (55455) gives a cube (1000 = 10³).

The spelling of 55455000 in words is "fifty-five million, four hundred fifty-five thousand".