53120000 has 110 divisors (see below), whose sum is σ = 134291388. Its totient is φ = 20992000.

The previous prime is 53119993. The next prime is 53120003. The reversal of 53120000 is 2135.

It is not an unprimeable number, because it can be changed into a prime (53120003) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 639959 + ... + 640041.

Almost surely, 2^53120000 is an apocalyptic number.

53120000 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 53120000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67145694).

53120000 is an abundant number, since it is smaller than the sum of its proper divisors (81171388).

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

53120000 is an frugal number, since it uses more digits than its factorization.

53120000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123 (or 90 counting only the distinct ones).

The product of its (nonzero) digits is 30, while the sum is 11.

The square root of 53120000 is about 7288.3468633154. The cubic root of 53120000 is about 375.9118549981.

Adding to 53120000 its reverse (2135), we get a palindrome (53122135).

The spelling of 53120000 in words is "fifty-three million, one hundred twenty thousand".