53021542 has 16 divisors (see below), whose sum is σ = 91111680. Its totient is φ = 22669128.

The previous prime is 53021513. The next prime is 53021543. The reversal of 53021542 is 24512035.

It is a super-2 number, since 2×53021542² = 5622567832115528, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53021543) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1833 + ... + 10459.

It is an arithmetic number, because the mean of its divisors is an integer number (5694480).

Almost surely, 2^53021542 is an apocalyptic number.

53021542 is a deficient number, since it is larger than the sum of its proper divisors (38090138).

53021542 is a wasteful number, since it uses less digits than its factorization.

53021542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9075.

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 53021542 is about 7281.5892496075. The cubic root of 53021542 is about 375.6794602945.

Adding to 53021542 its reverse (24512035), we get a palindrome (77533577).

The spelling of 53021542 in words is "fifty-three million, twenty-one thousand, five hundred forty-two".