51416401 has 4 divisors (see below), whose sum is σ = 51744052. Its totient is φ = 51088752.

The previous prime is 51416353. The next prime is 51416423. The reversal of 51416401 is 10461415.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 28901376 + 22515025 = 5376^2 + 4745^2 .

It is a cyclic number.

It is not a de Polignac number, because 51416401 - 2¹³ = 51408209 is a prime.

It is a super-3 number, since 3×51416401³ (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 (51416471) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 163590 + ... + 163903.

It is an arithmetic number, because the mean of its divisors is an integer number (12936013).

Almost surely, 2^51416401 is an apocalyptic number.

It is an amenable number.

51416401 is a deficient number, since it is larger than the sum of its proper divisors (327651).

51416401 is a wasteful number, since it uses less digits than its factorization.

51416401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 327650.

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 51416401 is about 7170.5230632082. The cubic root of 51416401 is about 371.8495195309.

Adding to 51416401 its reverse (10461415), we get a palindrome (61877816).

The spelling of 51416401 in words is "fifty-one million, four hundred sixteen thousand, four hundred one".