53526420 has 240 divisors, whose sum is σ = 185391360. Its totient is φ = 12877056.

The previous prime is 53526419. The next prime is 53526433. The reversal of 53526420 is 2462535.

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 79 ways as a sum of consecutive naturals, for example, 1138837 + ... + 1138883.

It is an arithmetic number, because the mean of its divisors is an integer number (772464).

Almost surely, 2^53526420 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 53526420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92695680).

53526420 is an abundant number, since it is smaller than the sum of its proper divisors (131864940).

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

53526420 is a wasteful number, since it uses less digits than its factorization.

53526420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124 (or 113 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 53526420 is about 7316.1752302689. The cubic root of 53526420 is about 376.8681182377.

Adding to 53526420 its reverse (2462535), we get a palindrome (55988955).

The spelling of 53526420 in words is "fifty-three million, five hundred twenty-six thousand, four hundred twenty".