55198572 has 96 divisors (see below), whose sum is σ = 159371520. Its totient is φ = 14618880.

The previous prime is 55198567. The next prime is 55198589. The reversal of 55198572 is 27589155.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 31758 + ... + 33450.

It is an arithmetic number, because the mean of its divisors is an integer number (1660120).

Almost surely, 2^55198572 is an apocalyptic number.

55198572 is a gapful number since it is divisible by the number (52) 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 55198572, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79685760).

55198572 is an abundant number, since it is smaller than the sum of its proper divisors (104172948).

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

55198572 is a wasteful number, since it uses less digits than its factorization.

55198572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1743 (or 1741 counting only the distinct ones).

The product of its digits is 126000, while the sum is 42.

The square root of 55198572 is about 7429.5741466116. The cubic root of 55198572 is about 380.7523690366.

The spelling of 55198572 in words is "fifty-five million, one hundred ninety-eight thousand, five hundred seventy-two".