51113214 has 32 divisors (see below), whose sum is σ = 114301440. Its totient is φ = 16930296.

The previous prime is 51113207. The next prime is 51113221. The reversal of 51113214 is 41231115.

51113214 = 477² + 478² + ... + 639².

It is an interprime number because it is at equal distance from previous prime (51113207) and next prime (51113221).

It is a super-2 number, since 2×51113214² = 5225121290819592, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5899 + ... + 11705.

It is an arithmetic number, because the mean of its divisors is an integer number (3571920).

Almost surely, 2^51113214 is an apocalyptic number.

51113214 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

51113214 is an abundant number, since it is smaller than the sum of its proper divisors (63188226).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51113214 is a wasteful number, since it uses less digits than its factorization.

51113214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5981 (or 5975 counting only the distinct ones).

The product of its digits is 120, while the sum is 18.

The square root of 51113214 is about 7149.3505998797. The cubic root of 51113214 is about 371.1171833846.

Adding to 51113214 its reverse (41231115), we get a palindrome (92344329).

The spelling of 51113214 in words is "fifty-one million, one hundred thirteen thousand, two hundred fourteen".