53021235 has 32 divisors (see below), whose sum is σ = 87010560. Its totient is φ = 27561600.

The previous prime is 53021231. The next prime is 53021239. The reversal of 53021235 is 53212035.

It is an interprime number because it is at equal distance from previous prime (53021231) and next prime (53021239).

It is not a de Polignac number, because 53021235 - 2² = 53021231 is a prime.

It is a super-2 number, since 2×53021235² = 5622502721850450, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (53021231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 160020 + ... + 160350.

It is an arithmetic number, because the mean of its divisors is an integer number (2719080).

Almost surely, 2^53021235 is an apocalyptic number.

53021235 is a deficient number, since it is larger than the sum of its proper divisors (33989325).

53021235 is a wasteful number, since it uses less digits than its factorization.

53021235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 579.

The product of its (nonzero) digits is 900, while the sum is 21.

The square root of 53021235 is about 7281.5681690141. The cubic root of 53021235 is about 375.6787352193.

The spelling of 53021235 in words is "fifty-three million, twenty-one thousand, two hundred thirty-five".