51603066 has 12 divisors (see below), whose sum is σ = 111806682. Its totient is φ = 17201016.

The previous prime is 51603059. The next prime is 51603067. The reversal of 51603066 is 66030615.

51603066 is a `hidden beast` number, since 51 + 603 + 0 + 6 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 51538041 + 65025 = 7179^2 + 255^2 .

It is not an unprimeable number, because it can be changed into a prime (51603067) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1433401 + ... + 1433436.

Almost surely, 2^51603066 is an apocalyptic number.

51603066 is an abundant number, since it is smaller than the sum of its proper divisors (60203616).

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

51603066 is a wasteful number, since it uses less digits than its factorization.

51603066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2866845 (or 2866842 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 51603066 is about 7183.5274065044. The cubic root of 51603066 is about 372.2989705491.

The spelling of 51603066 in words is "fifty-one million, six hundred three thousand, sixty-six".