51664030 has 16 divisors (see below), whose sum is σ = 101449584. Its totient is φ = 18786880.

The previous prime is 51664001. The next prime is 51664033. The reversal of 51664030 is 3046615.

It is a junction number, because it is equal to n+sod(n) for n = 51663986 and 51664004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51664033) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 234727 + ... + 234946.

It is an arithmetic number, because the mean of its divisors is an integer number (6340599).

Almost surely, 2^51664030 is an apocalyptic number.

51664030 is a deficient number, since it is larger than the sum of its proper divisors (49785554).

51664030 is a wasteful number, since it uses less digits than its factorization.

51664030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 469691.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 51664030 is about 7187.7694732093. The cubic root of 51664030 is about 372.4455245173.

It can be divided in two parts, 516 and 64030, that added together give a palindrome (64546).

The spelling of 51664030 in words is "fifty-one million, six hundred sixty-four thousand, thirty".