51015430 has 16 divisors (see below), whose sum is σ = 91963584. Its totient is φ = 20376000.

The previous prime is 51015427. The next prime is 51015431. The reversal of 51015430 is 3451015.

It is a junction number, because it is equal to n+sod(n) for n = 51015398 and 51015407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51015431) 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, 4114 + ... + 10906.

It is an arithmetic number, because the mean of its divisors is an integer number (5747724).

Almost surely, 2^51015430 is an apocalyptic number.

51015430 is a deficient number, since it is larger than the sum of its proper divisors (40948154).

51015430 is a wasteful number, since it uses less digits than its factorization.

51015430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7551.

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

The square root of 51015430 is about 7142.5086629279. The cubic root of 51015430 is about 370.8803725486.

Adding to 51015430 its reverse (3451015), we get a palindrome (54466445).

The spelling of 51015430 in words is "fifty-one million, fifteen thousand, four hundred thirty".