51431485 has 8 divisors (see below), whose sum is σ = 70534656. Its totient is φ = 35267280.

The previous prime is 51431467. The next prime is 51431503. The reversal of 51431485 is 58413415.

It is an interprime number because it is at equal distance from previous prime (51431467) and next prime (51431503).

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

It is not a de Polignac number, because 51431485 - 2⁵ = 51431453 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 734701 + ... + 734770.

It is an arithmetic number, because the mean of its divisors is an integer number (8816832).

Almost surely, 2^51431485 is an apocalyptic number.

It is an amenable number.

51431485 is a deficient number, since it is larger than the sum of its proper divisors (19103171).

51431485 is a wasteful number, since it uses less digits than its factorization.

51431485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1469483.

The product of its digits is 9600, while the sum is 31.

The square root of 51431485 is about 7171.5747921917. The cubic root of 51431485 is about 371.8858790688.

The spelling of 51431485 in words is "fifty-one million, four hundred thirty-one thousand, four hundred eighty-five".