51458881 has 8 divisors (see below), whose sum is σ = 55300320. Its totient is φ = 47707968.

The previous prime is 51458873. The next prime is 51458899. The reversal of 51458881 is 18885415.

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 51458881 - 2³ = 51458873 is a prime.

It is a super-2 number, since 2×51458881² = 5296032867544322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51458801) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21451 + ... + 23728.

It is an arithmetic number, because the mean of its divisors is an integer number (6912540).

Almost surely, 2^51458881 is an apocalyptic number.

It is an amenable number.

51458881 is a deficient number, since it is larger than the sum of its proper divisors (3841439).

51458881 is a wasteful number, since it uses less digits than its factorization.

51458881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45263.

The product of its digits is 51200, while the sum is 40.

The square root of 51458881 is about 7173.4845786410. The cubic root of 51458881 is about 371.9518981431.

It can be divided in two parts, 514 and 58881, that added together give a palindrome (59395).

The spelling of 51458881 in words is "fifty-one million, four hundred fifty-eight thousand, eight hundred eighty-one".