51458481 has 24 divisors (see below), whose sum is σ = 77226240. Its totient is φ = 32983200.

The previous prime is 51458461. The next prime is 51458483. The reversal of 51458481 is 18485415.

It is not a de Polignac number, because 51458481 - 2¹⁸ = 51196337 is a prime.

It is a super-2 number, since 2×51458481² = 5295950533654722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51458483) 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 23 ways as a sum of consecutive naturals, for example, 49990 + ... + 51008.

It is an arithmetic number, because the mean of its divisors is an integer number (3217760).

Almost surely, 2^51458481 is an apocalyptic number.

It is an amenable number.

51458481 is a deficient number, since it is larger than the sum of its proper divisors (25767759).

51458481 is a wasteful number, since it uses less digits than its factorization.

51458481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1237 (or 1234 counting only the distinct ones).

The product of its digits is 25600, while the sum is 36.

The square root of 51458481 is about 7173.4566981338. The cubic root of 51458481 is about 371.9509343889.

The spelling of 51458481 in words is "fifty-one million, four hundred fifty-eight thousand, four hundred eighty-one".