51338551 has 8 divisors (see below), whose sum is σ = 58953600. Its totient is φ = 44214840.

The previous prime is 51338537. The next prime is 51338561. The reversal of 51338551 is 15583315.

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 51338551 - 2⁷ = 51338423 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51338501) 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, 122611 + ... + 123028.

It is an arithmetic number, because the mean of its divisors is an integer number (7369200).

Almost surely, 2^51338551 is an apocalyptic number.

51338551 is a deficient number, since it is larger than the sum of its proper divisors (7615049).

51338551 is a wasteful number, since it uses less digits than its factorization.

51338551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245669.

The product of its digits is 9000, while the sum is 31.

The square root of 51338551 is about 7165.0925325497. The cubic root of 51338551 is about 371.6617512493.

The spelling of 51338551 in words is "fifty-one million, three hundred thirty-eight thousand, five hundred fifty-one".