53217804 has 12 divisors (see below), whose sum is σ = 124174904. Its totient is φ = 17739264.

The previous prime is 53217799. The next prime is 53217811. The reversal of 53217804 is 40871235.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2217397 + ... + 2217420.

Almost surely, 2^53217804 is an apocalyptic number.

It is an amenable number.

53217804 is an abundant number, since it is smaller than the sum of its proper divisors (70957100).

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

53217804 is a wasteful number, since it uses less digits than its factorization.

53217804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4434824 (or 4434822 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 53217804 is about 7295.0533925394. The cubic root of 53217804 is about 376.1424219027.

It can be divided in two parts, 532 and 17804, that added together give a triangular number (18336 = T₁₉₁).

The spelling of 53217804 in words is "fifty-three million, two hundred seventeen thousand, eight hundred four".