53580042 has 28 divisors (see below), whose sum is σ = 120503250. Its totient is φ = 17859528.

The previous prime is 53580001. The next prime is 53580049. The reversal of 53580042 is 24008535.

It can be written as a sum of positive squares in only one way, i.e., 51969681 + 1610361 = 7209^2 + 1269^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 53579988 and 53580015.

It is not an unprimeable number, because it can be changed into a prime (53580049) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 16917 + ... + 19832.

Almost surely, 2^53580042 is an apocalyptic number.

53580042 is an abundant number, since it is smaller than the sum of its proper divisors (66923208).

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

53580042 is an equidigital number, since it uses as much as digits as its factorization.

53580042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36769 (or 36754 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 53580042 is about 7319.8389326542. The cubic root of 53580042 is about 376.9939232628.

Adding to 53580042 its reverse (24008535), we get a palindrome (77588577).

The spelling of 53580042 in words is "fifty-three million, five hundred eighty thousand, forty-two".