51315434 has 16 divisors (see below), whose sum is σ = 78448608. Its totient is φ = 25169232.

The previous prime is 51315431. The next prime is 51315437. The reversal of 51315434 is 43451315.

It is an interprime number because it is at equal distance from previous prime (51315431) and next prime (51315437).

It is not an unprimeable number, because it can be changed into a prime (51315431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38609 + ... + 39915.

It is an arithmetic number, because the mean of its divisors is an integer number (4903038).

Almost surely, 2^51315434 is an apocalyptic number.

51315434 is a deficient number, since it is larger than the sum of its proper divisors (27133174).

51315434 is a wasteful number, since it uses less digits than its factorization.

51315434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1669.

The product of its digits is 3600, while the sum is 26.

The square root of 51315434 is about 7163.4791826319. The cubic root of 51315434 is about 371.6059582541.

Adding to 51315434 its reverse (43451315), we get a palindrome (94766749).

The spelling of 51315434 in words is "fifty-one million, three hundred fifteen thousand, four hundred thirty-four".