53145420 has 48 divisors (see below), whose sum is σ = 152275200. Its totient is φ = 13841856.

The previous prime is 53145409. The next prime is 53145437. The reversal of 53145420 is 2454135.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7720 + ... + 12879.

It is an arithmetic number, because the mean of its divisors is an integer number (3172400).

Almost surely, 2^53145420 is an apocalyptic number.

It is an amenable number.

53145420 is an abundant number, since it is smaller than the sum of its proper divisors (99129780).

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

53145420 is a wasteful number, since it uses less digits than its factorization.

53145420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20654 (or 20652 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 53145420 is about 7290.0905344173. The cubic root of 53145420 is about 375.9718082832.

Adding to 53145420 its reverse (2454135), we get a palindrome (55599555).

The spelling of 53145420 in words is "fifty-three million, one hundred forty-five thousand, four hundred twenty".