51505414 has 8 divisors (see below), whose sum is σ = 77337720. Its totient is φ = 25726176.

The previous prime is 51505403. The next prime is 51505423. The reversal of 51505414 is 41450515.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×51505414² = 5305615342622792, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10744 + ... + 14779.

It is an arithmetic number, because the mean of its divisors is an integer number (9667215).

Almost surely, 2^51505414 is an apocalyptic number.

51505414 is a deficient number, since it is larger than the sum of its proper divisors (25832306).

51505414 is a wasteful number, since it uses less digits than its factorization.

51505414 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26534.

The product of its (nonzero) digits is 2000, while the sum is 25.

The square root of 51505414 is about 7176.7272485444. The cubic root of 51505414 is about 372.0639800156.

Adding to 51505414 its reverse (41450515), we get a palindrome (92955929).

The spelling of 51505414 in words is "fifty-one million, five hundred five thousand, four hundred fourteen".