51414021 has 10 divisors (see below), whose sum is σ = 76803782. Its totient is φ = 34275960.

The previous prime is 51414017. The next prime is 51414023. The reversal of 51414021 is 12041415.

It can be written as a sum of positive squares in only one way, i.e., 34644996 + 16769025 = 5886^2 + 4095^2 .

It is not a de Polignac number, because 51414021 - 2² = 51414017 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 51413985 and 51414003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51414023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 317290 + ... + 317451.

Almost surely, 2^51414021 is an apocalyptic number.

It is an amenable number.

51414021 is a deficient number, since it is larger than the sum of its proper divisors (25389761).

51414021 is an equidigital number, since it uses as much as digits as its factorization.

51414021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 634753 (or 634744 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 51414021 is about 7170.3571040779. The cubic root of 51414021 is about 371.8437819615.

Adding to 51414021 its reverse (12041415), we get a palindrome (63455436).

It can be divided in two parts, 514 and 14021, that added together give a triangular number (14535 = T₁₇₀).

The spelling of 51414021 in words is "fifty-one million, four hundred fourteen thousand, twenty-one".