53449188 has 48 divisors (see below), whose sum is σ = 136039680. Its totient is φ = 16233984.

The previous prime is 53449169. The next prime is 53449189. The reversal of 53449188 is 88194435.

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

It is not an unprimeable number, because it can be changed into a prime (53449189) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10156 + ... + 14492.

It is an arithmetic number, because the mean of its divisors is an integer number (2834160).

Almost surely, 2^53449188 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53449188, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68019840).

53449188 is an abundant number, since it is smaller than the sum of its proper divisors (82590492).

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

53449188 is a wasteful number, since it uses less digits than its factorization.

53449188 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4436 (or 4434 counting only the distinct ones).

The product of its digits is 138240, while the sum is 42.

The square root of 53449188 is about 7310.8951572294. The cubic root of 53449188 is about 376.6867729715.

The spelling of 53449188 in words is "fifty-three million, four hundred forty-nine thousand, one hundred eighty-eight".