51420067 has 8 divisors (see below), whose sum is σ = 51880640. Its totient is φ = 50961960.

The previous prime is 51420037. The next prime is 51420079. The reversal of 51420067 is 76002415.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51420067 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51420007) 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, 79648 + ... + 80290.

It is an arithmetic number, because the mean of its divisors is an integer number (6485080).

Almost surely, 2^51420067 is an apocalyptic number.

51420067 is a deficient number, since it is larger than the sum of its proper divisors (460573).

51420067 is a wasteful number, since it uses less digits than its factorization.

51420067 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1233.

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 51420067 is about 7170.7786885386. The cubic root of 51420067 is about 371.8583569700.

The spelling of 51420067 in words is "fifty-one million, four hundred twenty thousand, sixty-seven".