51552550402 has 8 divisors (see below), whose sum is σ = 78038264700. Its totient is φ = 25539795504.

The previous prime is 51552550369. The next prime is 51552550409. The reversal of 51552550402 is 20405525515.

It can be written as a sum of positive squares in 2 ways, for example, as 50994220761 + 558329641 = 225819^2 + 23629^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (51552550409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 118239577 + ... + 118240012.

Almost surely, 2^51552550402 is an apocalyptic number.

51552550402 is a deficient number, since it is larger than the sum of its proper divisors (26485714298).

51552550402 is a wasteful number, since it uses less digits than its factorization.

51552550402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236479700.

The product of its (nonzero) digits is 50000, while the sum is 34.

The spelling of 51552550402 in words is "fifty-one billion, five hundred fifty-two million, five hundred fifty thousand, four hundred two".