53505428 has 6 divisors (see below), whose sum is σ = 93634506. Its totient is φ = 26752712.

The previous prime is 53505379. The next prime is 53505433. The reversal of 53505428 is 82450535.

It can be written as a sum of positive squares in only one way, i.e., 51437584 + 2067844 = 7172^2 + 1438^2 .

It is a junction number, because it is equal to n+sod(n) for n = 53505394 and 53505403.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6688175 + ... + 6688182.

It is an arithmetic number, because the mean of its divisors is an integer number (15605751).

Almost surely, 2^53505428 is an apocalyptic number.

It is an amenable number.

53505428 is a deficient number, since it is larger than the sum of its proper divisors (40129078).

53505428 is a wasteful number, since it uses less digits than its factorization.

53505428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13376361 (or 13376359 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 32.

The square root of 53505428 is about 7314.7404601941. The cubic root of 53505428 is about 376.8188450628.

The spelling of 53505428 in words is "fifty-three million, five hundred five thousand, four hundred twenty-eight".