51105430 has 16 divisors (see below), whose sum is σ = 92216880. Its totient is φ = 20391712.

The previous prime is 51105367. The next prime is 51105443. The reversal of 51105430 is 3450115.

It is a super-2 number, since 2×51105430² = 5223529950969800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 51105398 and 51105407.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1909 + ... + 10288.

It is an arithmetic number, because the mean of its divisors is an integer number (5763555).

Almost surely, 2^51105430 is an apocalyptic number.

51105430 is a deficient number, since it is larger than the sum of its proper divisors (41111450).

51105430 is a wasteful number, since it uses less digits than its factorization.

51105430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12623.

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 51105430 is about 7148.8061940439. The cubic root of 51105430 is about 371.0983433588.

Adding to 51105430 its reverse (3450115), we get a palindrome (54555545).

The spelling of 51105430 in words is "fifty-one million, one hundred five thousand, four hundred thirty".