51421051 has 8 divisors (see below), whose sum is σ = 56279808. Its totient is φ = 46593000.

The previous prime is 51421043. The next prime is 51421057. The reversal of 51421051 is 15012415.

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

It is a cyclic number.

It is not a de Polignac number, because 51421051 - 2³ = 51421043 is a prime.

It is a super-3 number, since 3×51421051³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51421057) 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, 4095 + ... + 10936.

It is an arithmetic number, because the mean of its divisors is an integer number (7034976).

Almost surely, 2^51421051 is an apocalyptic number.

51421051 is a deficient number, since it is larger than the sum of its proper divisors (4858757).

51421051 is a wasteful number, since it uses less digits than its factorization.

51421051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15353.

The product of its (nonzero) digits is 200, while the sum is 19.

The square root of 51421051 is about 7170.8473000058. The cubic root of 51421051 is about 371.8607289771.

Adding to 51421051 its reverse (15012415), we get a palindrome (66433466).

The spelling of 51421051 in words is "fifty-one million, four hundred twenty-one thousand, fifty-one".