53706240 has 400 divisors, whose sum is σ = 225780192. Its totient is φ = 11943936.

The previous prime is 53706239. The next prime is 53706251. The reversal of 53706240 is 4260735.

It is a happy number.

53706240 is a `hidden beast` number, since 5 + 37 + 0 + 624 + 0 = 666.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

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 39 ways as a sum of consecutive naturals, for example, 1451502 + ... + 1451538.

Almost surely, 2^53706240 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 53706240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (112890096).

53706240 is an abundant number, since it is smaller than the sum of its proper divisors (172073952).

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

53706240 is an equidigital number, since it uses as much as digits as its factorization.

53706240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79 (or 54 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 27.

The square root of 53706240 is about 7328.4541343997. The cubic root of 53706240 is about 377.2896712941.

Adding to 53706240 its reverse (4260735), we get a palindrome (57966975).

The spelling of 53706240 in words is "fifty-three million, seven hundred six thousand, two hundred forty".