53180400 has 240 divisors, whose sum is σ = 210097664. Its totient is φ = 11197440.

The previous prime is 53180389. The next prime is 53180419. The reversal of 53180400 is 408135.

It is a tau number, because it is divible by the number of its divisors (240).

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 108957 + ... + 109443.

Almost surely, 2^53180400 is an apocalyptic number.

53180400 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 53180400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (105048832).

53180400 is an abundant number, since it is smaller than the sum of its proper divisors (156917264).

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

53180400 is a wasteful number, since it uses less digits than its factorization.

53180400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 528 (or 517 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 53180400 is about 7292.4892869308. The cubic root of 53180400 is about 376.0542776631.

Adding to 53180400 its reverse (408135), we get a palindrome (53588535).

The spelling of 53180400 in words is "fifty-three million, one hundred eighty thousand, four hundred".