51212363 has 4 divisors (see below), whose sum is σ = 52178688. Its totient is φ = 50246040.

The previous prime is 51212351. The next prime is 51212377. The reversal of 51212363 is 36321215.

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

It is a cyclic number.

It is not a de Polignac number, because 51212363 - 2⁶ = 51212299 is a prime.

It is a super-2 number, since 2×51212363² = 5245412248087538, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51212333) 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, 483083 + ... + 483188.

It is an arithmetic number, because the mean of its divisors is an integer number (13044672).

Almost surely, 2^51212363 is an apocalyptic number.

51212363 is a gapful number since it is divisible by the number (53) formed by its first and last digit.

51212363 is a deficient number, since it is larger than the sum of its proper divisors (966325).

51212363 is an equidigital number, since it uses as much as digits as its factorization.

51212363 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 966324.

The product of its digits is 1080, while the sum is 23.

The square root of 51212363 is about 7156.2813667435. The cubic root of 51212363 is about 371.3569917644.

Adding to 51212363 its reverse (36321215), we get a palindrome (87533578).

The spelling of 51212363 in words is "fifty-one million, two hundred twelve thousand, three hundred sixty-three".