51040531 has 8 divisors (see below), whose sum is σ = 52457328. Its totient is φ = 49632000.

The previous prime is 51040481. The next prime is 51040541. The reversal of 51040531 is 13504015.

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

It is a cyclic number.

It is not a de Polignac number, because 51040531 - 2⁹ = 51040019 is a prime.

It is a super-2 number, since 2×51040531² = 5210271609523922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51040499 and 51040508.

It is not an unprimeable number, because it can be changed into a prime (51040541) by changing a digit.

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, 11691 + ... + 15451.

It is an arithmetic number, because the mean of its divisors is an integer number (6557166).

Almost surely, 2^51040531 is an apocalyptic number.

51040531 is a deficient number, since it is larger than the sum of its proper divisors (1416797).

51040531 is a wasteful number, since it uses less digits than its factorization.

51040531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4133.

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

The square root of 51040531 is about 7144.2656025655. The cubic root of 51040531 is about 370.9411903692.

Adding to 51040531 its reverse (13504015), we get a palindrome (64544546).

It can be divided in two parts, 510 and 40531, that added together give a triangular number (41041 = T₂₈₆).

The spelling of 51040531 in words is "fifty-one million, forty thousand, five hundred thirty-one".