51452551 has 8 divisors (see below), whose sum is σ = 54252800. Its totient is φ = 48661560.

The previous prime is 51452539. The next prime is 51452563. The reversal of 51452551 is 15525415.

It is an interprime number because it is at equal distance from previous prime (51452539) and next prime (51452563).

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 51452551 - 2¹⁵ = 51419783 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 (51453551) 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 7 ways as a sum of consecutive naturals, for example, 11170 + ... + 15088.

It is an arithmetic number, because the mean of its divisors is an integer number (6781600).

Almost surely, 2^51452551 is an apocalyptic number.

51452551 is a deficient number, since it is larger than the sum of its proper divisors (2800249).

51452551 is a wasteful number, since it uses less digits than its factorization.

51452551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4629.

The product of its digits is 5000, while the sum is 28.

The square root of 51452551 is about 7173.0433569023. The cubic root of 51452551 is about 371.9366461464.

Adding to 51452551 its reverse (15525415), we get a palindrome (66977966).

It can be divided in two parts, 51452 and 551, that added together give a triangular number (52003 = T₃₂₂).

The spelling of 51452551 in words is "fifty-one million, four hundred fifty-two thousand, five hundred fifty-one".