51023634 has 16 divisors (see below), whose sum is σ = 102127872. Its totient is φ = 16994448.

The previous prime is 51023597. The next prime is 51023657. The reversal of 51023634 is 43632015.

It is a happy number.

It is a super-2 number, since 2×51023634² = 5206822453131912, which contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 7647 + ... + 12669.

It is an arithmetic number, because the mean of its divisors is an integer number (6382992).

Almost surely, 2^51023634 is an apocalyptic number.

51023634 is an abundant number, since it is smaller than the sum of its proper divisors (51104238).

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

51023634 is a wasteful number, since it uses less digits than its factorization.

51023634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6721.

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 51023634 is about 7143.0829478594. The cubic root of 51023634 is about 370.9002524129.

Adding to 51023634 its reverse (43632015), we get a palindrome (94655649).

The spelling of 51023634 in words is "fifty-one million, twenty-three thousand, six hundred thirty-four".