52783816 has 8 divisors (see below), whose sum is σ = 98969670. Its totient is φ = 26391904.

The previous prime is 52783789. The next prime is 52783823. The reversal of 52783816 is 61838725.

It can be written as a sum of positive squares in only one way, i.e., 48246916 + 4536900 = 6946^2 + 2130^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×52783816² = 5572262463043712, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3298981 + ... + 3298996.

Almost surely, 2^52783816 is an apocalyptic number.

It is an amenable number.

52783816 is a deficient number, since it is larger than the sum of its proper divisors (46185854).

52783816 is a wasteful number, since it uses less digits than its factorization.

52783816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6597983 (or 6597979 counting only the distinct ones).

The product of its digits is 80640, while the sum is 40.

The square root of 52783816 is about 7265.2471396368. The cubic root of 52783816 is about 375.1171568757.

The spelling of 52783816 in words is "fifty-two million, seven hundred eighty-three thousand, eight hundred sixteen".