55245450 has 96 divisors (see below), whose sum is σ = 151365312. Its totient is φ = 13248000.

The previous prime is 55245431. The next prime is 55245467. The reversal of 55245450 is 5454255.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 79605 + ... + 80295.

It is an arithmetic number, because the mean of its divisors is an integer number (1576722).

Almost surely, 2^55245450 is an apocalyptic number.

55245450 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 55245450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75682656).

55245450 is an abundant number, since it is smaller than the sum of its proper divisors (96119862).

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

55245450 is a wasteful number, since it uses less digits than its factorization.

55245450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 760 (or 755 counting only the distinct ones).

The product of its (nonzero) digits is 20000, while the sum is 30.

The square root of 55245450 is about 7432.7283012364. The cubic root of 55245450 is about 380.8601245968.

The spelling of 55245450 in words is "fifty-five million, two hundred forty-five thousand, four hundred fifty".