51451201 has 4 divisors (see below), whose sum is σ = 52841812. Its totient is φ = 50060592.

The previous prime is 51451159. The next prime is 51451217. The reversal of 51451201 is 10215415.

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 39992976 + 11458225 = 6324^2 + 3385^2 .

It is a cyclic number.

It is not a de Polignac number, because 51451201 - 2¹³ = 51443009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51451261) 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, 695250 + ... + 695323.

It is an arithmetic number, because the mean of its divisors is an integer number (13210453).

Almost surely, 2^51451201 is an apocalyptic number.

It is an amenable number.

51451201 is a deficient number, since it is larger than the sum of its proper divisors (1390611).

51451201 is a wasteful number, since it uses less digits than its factorization.

51451201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1390610.

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

The square root of 51451201 is about 7172.9492539680. The cubic root of 51451201 is about 371.9333931890.

Adding to 51451201 its reverse (10215415), we get a palindrome (61666616).

It can be divided in two parts, 514 and 51201, that added together give a palindrome (51715).

The spelling of 51451201 in words is "fifty-one million, four hundred fifty-one thousand, two hundred one".