53034240 has 144 divisors (see below), whose sum is σ = 193673088. Its totient is φ = 12115968.

The previous prime is 53034227. The next prime is 53034253. The reversal of 53034240 is 4243035.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (53034227) and next prime (53034253).

It is a super-2 number, since 2×53034240² = 5625261224755200, which contains 22 as substring.

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 15 ways as a sum of consecutive naturals, for example, 25894 + ... + 27866.

It is an arithmetic number, because the mean of its divisors is an integer number (1344952).

Almost surely, 2^53034240 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 53034240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (96836544).

53034240 is an abundant number, since it is smaller than the sum of its proper divisors (140638848).

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

53034240 is a wasteful number, since it uses less digits than its factorization.

53034240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2004 (or 1990 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 21.

The square root of 53034240 is about 7282.4611224503. The cubic root of 53034240 is about 375.7094480871.

Adding to 53034240 its reverse (4243035), we get a palindrome (57277275).

The spelling of 53034240 in words is "fifty-three million, thirty-four thousand, two hundred forty".