55453500 has 72 divisors (see below), whose sum is σ = 174951504. Its totient is φ = 14786400.

The previous prime is 55453493. The next prime is 55453511. The reversal of 55453500 is 535455.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1662 + ... + 10661.

It is an arithmetic number, because the mean of its divisors is an integer number (2429882).

Almost surely, 2^55453500 is an apocalyptic number.

55453500 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 55453500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87475752).

55453500 is an abundant number, since it is smaller than the sum of its proper divisors (119498004).

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

55453500 is a wasteful number, since it uses less digits than its factorization.

55453500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12348 (or 12333 counting only the distinct ones).

The product of its (nonzero) digits is 7500, while the sum is 27.

The square root of 55453500 is about 7446.7106832480. The cubic root of 55453500 is about 381.3376220713.

Adding to 55453500 its reverse (535455), we get a palindrome (55988955).

It can be divided in two parts, 5545 and 3500, that added together give a triangular number (9045 = T₁₃₄).

The spelling of 55453500 in words is "fifty-five million, four hundred fifty-three thousand, five hundred".