53380404 has 192 divisors, whose sum is σ = 177408000. Its totient is φ = 13759200.

The previous prime is 53380399. The next prime is 53380423. The reversal of 53380404 is 40408335.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 407419 + ... + 407549.

It is an arithmetic number, because the mean of its divisors is an integer number (924000).

Almost surely, 2^53380404 is an apocalyptic number.

53380404 is a gapful number since it is divisible by the number (54) 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 53380404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88704000).

53380404 is an abundant number, since it is smaller than the sum of its proper divisors (124027596).

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

53380404 is a wasteful number, since it uses less digits than its factorization.

53380404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176 (or 154 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 53380404 is about 7306.1894308867. The cubic root of 53380404 is about 376.5251169733.

Adding to 53380404 its reverse (40408335), we get a palindrome (93788739).

The spelling of 53380404 in words is "fifty-three million, three hundred eighty thousand, four hundred four".