53407066 has 4 divisors (see below), whose sum is σ = 80110602. Its totient is φ = 26703532.

The previous prime is 53407061. The next prime is 53407091. The reversal of 53407066 is 66070435.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 37638225 + 15768841 = 6135^2 + 3971^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (53407061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13351765 + ... + 13351768.

Almost surely, 2^53407066 is an apocalyptic number.

53407066 is a deficient number, since it is larger than the sum of its proper divisors (26703536).

53407066 is a wasteful number, since it uses less digits than its factorization.

53407066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26703535.

The product of its (nonzero) digits is 15120, while the sum is 31.

The square root of 53407066 is about 7308.0138204576. The cubic root of 53407066 is about 376.5877944167.

The spelling of 53407066 in words is "fifty-three million, four hundred seven thousand, sixty-six".