55432170 has 48 divisors (see below), whose sum is σ = 146855592. Its totient is φ = 14501760.

The previous prime is 55432159. The next prime is 55432199. The reversal of 55432170 is 7123455.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 37564641 + 17867529 = 6129^2 + 4227^2 .

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, 1041 + ... + 10580.

Almost surely, 2^55432170 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55432170, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73427796).

55432170 is an abundant number, since it is smaller than the sum of its proper divisors (91423422).

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

55432170 is a wasteful number, since it uses less digits than its factorization.

55432170 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11687 (or 11684 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 27.

The square root of 55432170 is about 7445.2783695440. The cubic root of 55432170 is about 381.2887223950.

The spelling of 55432170 in words is "fifty-five million, four hundred thirty-two thousand, one hundred seventy".