66550052 has 24 divisors (see below), whose sum is σ = 120022560. Its totient is φ = 32267840.

The previous prime is 66550037. The next prime is 66550069. The reversal of 66550052 is 25005566.

It is a junction number, because it is equal to n+sod(n) for n = 66549997 and 66550024.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28223 + ... + 30489.

It is an arithmetic number, because the mean of its divisors is an integer number (5000940).

Almost surely, 2^66550052 is an apocalyptic number.

It is an amenable number.

66550052 is a deficient number, since it is larger than the sum of its proper divisors (53472508).

66550052 is a wasteful number, since it uses less digits than its factorization.

66550052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2491 (or 2489 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 29.

The square root of 66550052 is about 8157.8215229312. The cubic root of 66550052 is about 405.2435703984.

The spelling of 66550052 in words is "sixty-six million, five hundred fifty thousand, fifty-two".