53101440 has 256 divisors, whose sum is σ = 215424000. Its totient is φ = 12109824.

The previous prime is 53101381. The next prime is 53101463. The reversal of 53101440 is 4410135.

It is a happy number.

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 31 ways as a sum of consecutive naturals, for example, 120741 + ... + 121179.

It is an arithmetic number, because the mean of its divisors is an integer number (841500).

Almost surely, 2^53101440 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53101440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (107712000).

53101440 is an abundant number, since it is smaller than the sum of its proper divisors (162322560).

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

53101440 is a wasteful number, since it uses less digits than its factorization.

53101440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 474 (or 456 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 53101440 is about 7287.0734866612. The cubic root of 53101440 is about 375.8680689994.

Adding to 53101440 its reverse (4410135), we get a palindrome (57511575).

The spelling of 53101440 in words is "fifty-three million, one hundred one thousand, four hundred forty".