53435666 has 16 divisors (see below), whose sum is σ = 81698328. Its totient is φ = 26208000.

The previous prime is 53435653. The next prime is 53435671. The reversal of 53435666 is 66653435.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 47210641 + 6225025 = 6871^2 + 2495^2 .

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, 21656 + ... + 23996.

Almost surely, 2^53435666 is an apocalyptic number.

53435666 is a deficient number, since it is larger than the sum of its proper divisors (28262662).

53435666 is a wasteful number, since it uses less digits than its factorization.

53435666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2557.

The product of its digits is 194400, while the sum is 38.

The square root of 53435666 is about 7309.9703145772. The cubic root of 53435666 is about 376.6550045553.

The spelling of 53435666 in words is "fifty-three million, four hundred thirty-five thousand, six hundred sixty-six".