51230493 has 12 divisors (see below), whose sum is σ = 74066460. Its totient is φ = 34122816.

The previous prime is 51230483. The next prime is 51230497. The reversal of 51230493 is 39403215.

It can be written as a sum of positive squares in 2 ways, for example, as 16867449 + 34363044 = 4107^2 + 5862^2 .

It is not a de Polignac number, because 51230493 - 2⁴ = 51230477 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51230497) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12753 + ... + 16281.

It is an arithmetic number, because the mean of its divisors is an integer number (6172205).

Almost surely, 2^51230493 is an apocalyptic number.

It is an amenable number.

51230493 is a deficient number, since it is larger than the sum of its proper divisors (22835967).

51230493 is a wasteful number, since it uses less digits than its factorization.

51230493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5148 (or 5145 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 51230493 is about 7157.5479739922. The cubic root of 51230493 is about 371.4008087096.

The spelling of 51230493 in words is "fifty-one million, two hundred thirty thousand, four hundred ninety-three".