53078240 has 24 divisors (see below), whose sum is σ = 125397720. Its totient is φ = 21231232.

The previous prime is 53078219. The next prime is 53078243. The reversal of 53078240 is 4287035.

It is a happy number.

It is a super-2 number, since 2×53078240² = 5634599122995200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53078243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 165710 + ... + 166029.

It is an arithmetic number, because the mean of its divisors is an integer number (5224905).

Almost surely, 2^53078240 is an apocalyptic number.

It is an amenable number.

53078240 is an abundant number, since it is smaller than the sum of its proper divisors (72319480).

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

53078240 is a wasteful number, since it uses less digits than its factorization.

53078240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331754 (or 331746 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 53078240 is about 7285.4814528623. The cubic root of 53078240 is about 375.8133221510.

The spelling of 53078240 in words is "fifty-three million, seventy-eight thousand, two hundred forty".