53190000 has 200 divisors, whose sum is σ = 191751120. Its totient is φ = 14112000.

The previous prime is 53189999. The next prime is 53190037. The reversal of 53190000 is 9135.

It is a tau number, because it is divible by the number of its divisors (200).

It is a super-2 number, since 2×53190000² = 5658352200000000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 269902 + ... + 270098.

Almost surely, 2^53190000 is an apocalyptic number.

53190000 is a gapful number since it is divisible by the number (50) 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 53190000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95875560).

53190000 is an abundant number, since it is smaller than the sum of its proper divisors (138561120).

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

53190000 is a wasteful number, since it uses less digits than its factorization.

53190000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234 (or 207 counting only the distinct ones).

The product of its (nonzero) digits is 135, while the sum is 18.

The square root of 53190000 is about 7293.1474686859. The cubic root of 53190000 is about 376.0769044445.

Adding to 53190000 its reverse (9135), we get a palindrome (53199135).

The spelling of 53190000 in words is "fifty-three million, one hundred ninety thousand".