51346031 has 4 divisors (see below), whose sum is σ = 56013864. Its totient is φ = 46678200.

The previous prime is 51346021. The next prime is 51346039. The reversal of 51346031 is 13064315.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 51346031 - 2¹⁸ = 51083887 is a prime.

It is a super-2 number, since 2×51346031² = 5272829798905922, 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 = 51345988 and 51346006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51346039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2333900 + ... + 2333921.

It is an arithmetic number, because the mean of its divisors is an integer number (14003466).

Almost surely, 2^51346031 is an apocalyptic number.

51346031 is a deficient number, since it is larger than the sum of its proper divisors (4667833).

51346031 is a wasteful number, since it uses less digits than its factorization.

51346031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4667832.

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 51346031 is about 7165.6144886534. The cubic root of 51346031 is about 371.6798006803.

The spelling of 51346031 in words is "fifty-one million, three hundred forty-six thousand, thirty-one".