53509194 has 32 divisors (see below), whose sum is σ = 120098880. Its totient is φ = 17658000.

The previous prime is 53509163. The next prime is 53509213. The reversal of 53509194 is 49190535.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 549 + ... + 10359.

It is an arithmetic number, because the mean of its divisors is an integer number (3753090).

Almost surely, 2^53509194 is an apocalyptic number.

53509194 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 53509194, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60049440).

53509194 is an abundant number, since it is smaller than the sum of its proper divisors (66589686).

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

53509194 is a wasteful number, since it uses less digits than its factorization.

53509194 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9923 (or 9917 counting only the distinct ones).

The product of its (nonzero) digits is 24300, while the sum is 36.

The square root of 53509194 is about 7314.9978810660. The cubic root of 53509194 is about 376.8276857015.

The spelling of 53509194 in words is "fifty-three million, five hundred nine thousand, one hundred ninety-four".