51552651 has 4 divisors (see below), whose sum is σ = 68736872. Its totient is φ = 34368432.

The previous prime is 51552649. The next prime is 51552661. The reversal of 51552651 is 15625515.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 51552651 - 2¹ = 51552649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51552661) 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 3 ways as a sum of consecutive naturals, for example, 8592106 + ... + 8592111.

It is an arithmetic number, because the mean of its divisors is an integer number (17184218).

Almost surely, 2^51552651 is an apocalyptic number.

51552651 is a deficient number, since it is larger than the sum of its proper divisors (17184221).

51552651 is a wasteful number, since it uses less digits than its factorization.

51552651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17184220.

The product of its digits is 7500, while the sum is 30.

The square root of 51552651 is about 7180.0174790874. The cubic root of 51552651 is about 372.1776885542.

The spelling of 51552651 in words is "fifty-one million, five hundred fifty-two thousand, six hundred fifty-one".