51027551 has 8 divisors (see below), whose sum is σ = 52900560. Its totient is φ = 49180608.

The previous prime is 51027517. The next prime is 51027553. The reversal of 51027551 is 15572015.

It is a happy number.

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 51027551 - 2¹⁴ = 51011167 is a prime.

It is a super-2 number, since 2×51027551² = 5207621922115202, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51027551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51027553) 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, 2486 + ... + 10403.

It is an arithmetic number, because the mean of its divisors is an integer number (6612570).

Almost surely, 2^51027551 is an apocalyptic number.

51027551 is a deficient number, since it is larger than the sum of its proper divisors (1873009).

51027551 is a wasteful number, since it uses less digits than its factorization.

51027551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13033.

The product of its (nonzero) digits is 1750, while the sum is 26.

The square root of 51027551 is about 7143.3571239299. The cubic root of 51027551 is about 370.9097433031.

Adding to 51027551 its reverse (15572015), we get a palindrome (66599566).

The spelling of 51027551 in words is "fifty-one million, twenty-seven thousand, five hundred fifty-one".