53815242 has 64 divisors (see below), whose sum is σ = 123338880. Its totient is φ = 15531264.

The previous prime is 53815219. The next prime is 53815243. The reversal of 53815242 is 24251835.

It is not an unprimeable number, because it can be changed into a prime (53815243) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 83373 + ... + 84015.

It is an arithmetic number, because the mean of its divisors is an integer number (1927170).

Almost surely, 2^53815242 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53815242, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61669440).

53815242 is an abundant number, since it is smaller than the sum of its proper divisors (69523638).

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

53815242 is a wasteful number, since it uses less digits than its factorization.

53815242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 727.

The product of its digits is 9600, while the sum is 30.

The square root of 53815242 is about 7335.8872673999. The cubic root of 53815242 is about 377.5447474111.

The spelling of 53815242 in words is "fifty-three million, eight hundred fifteen thousand, two hundred forty-two".